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Message boards : Sierpinski/Riesel Base 5 Problem : SR5 prime found or stuck task?

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Profile GrebulonerProject donor
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Found 2 primes in the 2018 Tour de PrimesFound 4 primes in the 2019 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (10,053,890)Cullen LLR Turquoise: Earned 5,000,000 credits (9,932,283)ESP LLR Jade: Earned 10,000,000 credits (11,365,701)Generalized Cullen/Woodall LLR Jade: Earned 10,000,000 credits (11,458,304)PPS LLR Sapphire: Earned 20,000,000 credits (23,698,206)PSP LLR Jade: Earned 10,000,000 credits (10,025,532)SoB LLR Jade: Earned 10,000,000 credits (13,815,699)SR5 LLR Jade: Earned 10,000,000 credits (10,791,550)SGS LLR Jade: Earned 10,000,000 credits (10,044,146)TRP LLR Jade: Earned 10,000,000 credits (12,578,327)Woodall LLR Jade: Earned 10,000,000 credits (10,037,126)321 Sieve Sapphire: Earned 20,000,000 credits (20,128,873)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,178,073)Generalized Cullen/Woodall Sieve Emerald: Earned 50,000,000 credits (56,046,594)PPS Sieve Double Silver: Earned 200,000,000 credits (426,198,774)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (9,468,384)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,076,645)AP 26/27 Double Silver: Earned 200,000,000 credits (314,115,877)GFN Double Bronze: Earned 100,000,000 credits (184,664,000)PSA Double Bronze: Earned 100,000,000 credits (102,878,562)
Message 74766 - Posted: 20 Mar 2014 | 14:12:52 UTC

For the past 36 hours, my wingman and I have been pounding away on this SR5 task on my 3930k:

http://www.primegrid.com/workunit.php?wuid=386276075

From the sticky thread, I know finding a prime is supposed to take 10x as long to crunch as a regular workunit, which take around 2:15 on my computer (6 threads active). This particular one was at about 44% at the 2 hour mark, and the percentage per hour completion rate steadily decreased and seems to be asymptotic with 0. To speed the crunching and get that coveted #1 spot (since I am against an Ivy i5) I suspended the other tasks and have just the 1 core running on this guy. Yesterday afternoon at 25 hours it was 98%, this morning at 36 hours when I left for work it was at 99.994%. Based on the other SR5 prime times on a 3930k, that seems a bit long, yes?

So, I'm curious, considering my wingman is still working on this as well, is it likely that we are close to finding the next SR5 or is something off here?
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321 LLR Ruby: Earned 2,000,000 credits (2,071,006)Cullen LLR Ruby: Earned 2,000,000 credits (4,358,167)ESP LLR Turquoise: Earned 5,000,000 credits (5,014,632)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,589,971)PPS LLR Ruby: Earned 2,000,000 credits (2,102,793)PSP LLR Turquoise: Earned 5,000,000 credits (5,013,650)SoB LLR Sapphire: Earned 20,000,000 credits (38,449,942)SR5 LLR Jade: Earned 10,000,000 credits (10,987,079)SGS LLR Ruby: Earned 2,000,000 credits (2,069,865)TRP LLR Ruby: Earned 2,000,000 credits (2,125,793)Woodall LLR Ruby: Earned 2,000,000 credits (2,595,228)321 Sieve Turquoise: Earned 5,000,000 credits (5,000,447)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,002,919)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,005,451)PPS Sieve Emerald: Earned 50,000,000 credits (50,809,179)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Ruby: Earned 2,000,000 credits (2,341,676)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,070,804)AP 26/27 Jade: Earned 10,000,000 credits (10,592,660)GFN Sapphire: Earned 20,000,000 credits (31,491,236)PSA Double Gold: Earned 500,000,000 credits (630,747,985)
Message 74771 - Posted: 20 Mar 2014 | 17:11:51 UTC
Last modified: 20 Mar 2014 | 17:23:12 UTC

It's certainly possible that it's prime, but the only way I could answer this is to test that candidate myself. I don't know how the boinc client displays progress on an SR5 prime as I've never had one myself. I've triplechecked quite a few, but we generally do so manually using the pfgw program.

Your wingman could be running any number of projects simultaneously, so you can't really conclude anything from how long he/she is taking to return that candidate.

Profile Michael GoetzProject donor
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,063,182)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (4,220,222)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Ruby: Earned 2,000,000 credits (2,773,744)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (34,158,496)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,012,222)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,046,112)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (7,090,096)GFN Emerald: Earned 50,000,000 credits (64,594,991)PSA Jade: Earned 10,000,000 credits (10,597,947)
Message 74773 - Posted: 20 Mar 2014 | 17:56:38 UTC

I've started checking it on this machine. I'll let you know in about 90 minutes.
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Found 2 primes in the 2018 Tour de PrimesFound 4 primes in the 2019 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (10,053,890)Cullen LLR Turquoise: Earned 5,000,000 credits (9,932,283)ESP LLR Jade: Earned 10,000,000 credits (11,365,701)Generalized Cullen/Woodall LLR Jade: Earned 10,000,000 credits (11,458,304)PPS LLR Sapphire: Earned 20,000,000 credits (23,698,206)PSP LLR Jade: Earned 10,000,000 credits (10,025,532)SoB LLR Jade: Earned 10,000,000 credits (13,815,699)SR5 LLR Jade: Earned 10,000,000 credits (10,791,550)SGS LLR Jade: Earned 10,000,000 credits (10,044,146)TRP LLR Jade: Earned 10,000,000 credits (12,578,327)Woodall LLR Jade: Earned 10,000,000 credits (10,037,126)321 Sieve Sapphire: Earned 20,000,000 credits (20,128,873)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,178,073)Generalized Cullen/Woodall Sieve Emerald: Earned 50,000,000 credits (56,046,594)PPS Sieve Double Silver: Earned 200,000,000 credits (426,198,774)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (9,468,384)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,076,645)AP 26/27 Double Silver: Earned 200,000,000 credits (314,115,877)GFN Double Bronze: Earned 100,000,000 credits (184,664,000)PSA Double Bronze: Earned 100,000,000 credits (102,878,562)
Message 74779 - Posted: 20 Mar 2014 | 19:42:16 UTC - in response to Message 74771.
Last modified: 20 Mar 2014 | 19:43:11 UTC


Your wingman could be running any number of projects simultaneously, so you can't really conclude anything from how long he/she is taking to return that candidate.


True. I checked their FreeDC computer stats and Primegrid tasks list and it has him/her at 90% Primegrid recently. Best I can figure, it means that they seem to be spending a lot of time on the same task, but that could be just some bad table-top math :)

Michael-I look forward to your results! I hope the 44+ hours I'm currently at won't be wasted. :)
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Profile Michael GoetzProject donor
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,063,182)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (4,220,222)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Ruby: Earned 2,000,000 credits (2,773,744)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (34,158,496)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,012,222)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,046,112)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (7,090,096)GFN Emerald: Earned 50,000,000 credits (64,594,991)PSA Jade: Earned 10,000,000 credits (10,597,947)
Message 74780 - Posted: 20 Mar 2014 | 20:38:31 UTC

Result sent via PM.

In the future, it's best to ask these questions via PM rather than publicly. It's possible (although unlikely) that an unscrupulous person could figure out what number you're testing and attempt to report the prime as their discovery to the top 5000 prime list before you and your wingman complete the testing.

In general, if a task appears to be "stuck", the best approach is:

1) In the BOINC manager, "Suspend Activity" to stop all running tasks.
2) Reboot your computer.
3) In the BOINC manager, change back to "Run according to preferences."

In most cases, that should unstick the task.

Although I've never personally seen it, on an SGS or SR5 prime, what you should see if a prime is found is a normal progression from 0 to 99% followed by the percentage resetting back to 0, and then progressing a second time up to 100%. In the case of an SR5 test on a Reisel number (i.e., c = -1), this will occur about 5 times.
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321 LLR Gold: Earned 500,000 credits (656,177)Cullen LLR Silver: Earned 100,000 credits (457,297)ESP LLR Silver: Earned 100,000 credits (437,502)PPS LLR Amethyst: Earned 1,000,000 credits (1,256,334)SoB LLR Amethyst: Earned 1,000,000 credits (1,246,109)SR5 LLR Ruby: Earned 2,000,000 credits (2,193,129)SGS LLR Silver: Earned 100,000 credits (101,658)Woodall LLR Silver: Earned 100,000 credits (292,129)Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (32,498)PPS Sieve Jade: Earned 10,000,000 credits (15,515,229)AP 26/27 Amethyst: Earned 1,000,000 credits (1,491,867)GFN Ruby: Earned 2,000,000 credits (4,245,870)PSA Silver: Earned 100,000 credits (101,309)
Message 74788 - Posted: 21 Mar 2014 | 5:24:28 UTC
Last modified: 21 Mar 2014 | 5:47:21 UTC

Is it my imagination or did the OP abort his task ?!

EDIT:- That means it is not prime? :-(

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Eliminated 2 conjecture "k"s321 LLR Turquoise: Earned 5,000,000 credits (5,342,838)Cullen LLR Silver: Earned 100,000 credits (158,983)ESP LLR Gold: Earned 500,000 credits (505,527)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,268,642)PPS LLR Sapphire: Earned 20,000,000 credits (23,395,331)PSP LLR Silver: Earned 100,000 credits (120,541)SoB LLR Amethyst: Earned 1,000,000 credits (1,280,028)SR5 LLR Ruby: Earned 2,000,000 credits (2,649,390)SGS LLR Gold: Earned 500,000 credits (518,356)TRP LLR Silver: Earned 100,000 credits (141,131)Woodall LLR Silver: Earned 100,000 credits (116,405)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (235,088)PPS Sieve Amethyst: Earned 1,000,000 credits (1,031,526)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Gold: Earned 500,000 credits (500,445)TRP Sieve (suspended) Gold: Earned 500,000 credits (507,938)GFN Double Bronze: Earned 100,000,000 credits (160,705,973)PSA Silver: Earned 100,000 credits (291,533)
Message 74860 - Posted: 23 Mar 2014 | 17:38:50 UTC - in response to Message 74788.

Not this one, but another one is. (by Brown. Congrats!)
____________
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Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 13 mega primesEliminated 7 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 1 Fermat divisor2012 Tour de Primes highest prime count2012 Tour de Primes most Mountain Stage primes2015 Tour de Primes highest prime count2016 Tour de Primes highest prime countFound 23 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 2 primes in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes highest prime countFound 22 primes in the 2019 Tour de Primes321 LLR Double Bronze: Earned 100,000,000 credits (100,829,118)Cullen LLR Double Bronze: Earned 100,000,000 credits (103,870,990)ESP LLR Double Bronze: Earned 100,000,000 credits (123,080,126)Generalized Cullen/Woodall LLR Double Bronze: Earned 100,000,000 credits (108,461,080)PPS LLR Double Silver: Earned 200,000,000 credits (343,575,390)PSP LLR Double Bronze: Earned 100,000,000 credits (108,003,110)SoB LLR Double Bronze: Earned 100,000,000 credits (135,747,083)SR5 LLR Double Silver: Earned 200,000,000 credits (201,220,450)SGS LLR Double Bronze: Earned 100,000,000 credits (160,938,681)TPS LLR (retired) Silver: Earned 100,000 credits (235,439)TRP LLR Double Bronze: Earned 100,000,000 credits (121,443,822)Woodall LLR Double Bronze: Earned 100,000,000 credits (101,447,725)321 Sieve Double Silver: Earned 200,000,000 credits (203,510,966)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve Double Silver: Earned 200,000,000 credits (285,139,652)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,107,846,728)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Double Silver: Earned 200,000,000 credits (203,523,358)TRP Sieve (suspended) Double Silver: Earned 200,000,000 credits (201,489,157)AP 26/27 Double Bronze: Earned 100,000,000 credits (119,562,131)GFN Double Amethyst: Earned 1,000,000,000 credits (1,232,021,835)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 74876 - Posted: 24 Mar 2014 | 16:54:51 UTC - in response to Message 74860.

Not this one, but another one is. (by Brown. Congrats!)


Yep. :)

Official announcement and news post should be up soon. That's 4 so far this year...anybody think we can make it a dozen before 2014 is over?

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Discovered 1 mega primeEliminated 1 conjecture "k"Discovered 1 twin prime321 LLR Turquoise: Earned 5,000,000 credits (5,014,405)Cullen LLR Turquoise: Earned 5,000,000 credits (5,734,854)ESP LLR Turquoise: Earned 5,000,000 credits (5,421,149)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,576,209)PPS LLR Turquoise: Earned 5,000,000 credits (9,825,243)PSP LLR Turquoise: Earned 5,000,000 credits (9,352,326)SoB LLR Turquoise: Earned 5,000,000 credits (8,986,628)SR5 LLR Turquoise: Earned 5,000,000 credits (5,248,659)SGS LLR Turquoise: Earned 5,000,000 credits (6,878,856)TRP LLR Turquoise: Earned 5,000,000 credits (5,416,106)Woodall LLR Turquoise: Earned 5,000,000 credits (6,400,237)321 Sieve Amethyst: Earned 1,000,000 credits (1,000,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,000,977)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (6,843,367)PPS Sieve Emerald: Earned 50,000,000 credits (78,673,438)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (6,473,750)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,243,608)AP 26/27 Jade: Earned 10,000,000 credits (11,734,912)GFN Double Silver: Earned 200,000,000 credits (202,087,888)PSA Turquoise: Earned 5,000,000 credits (5,042,125)
Message 74879 - Posted: 24 Mar 2014 | 17:44:53 UTC

Another "K" bites the dust.

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,063,182)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (4,220,222)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Ruby: Earned 2,000,000 credits (2,773,744)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (34,158,496)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,012,222)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,046,112)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (7,090,096)GFN Emerald: Earned 50,000,000 credits (64,594,991)PSA Jade: Earned 10,000,000 credits (10,597,947)
Message 75373 - Posted: 9 Apr 2014 | 20:07:55 UTC - in response to Message 74879.

Another "K" bites the dust.


Two more k's bit the dust today. More information will be released once wingmen, reporting, verification, etc. is done.
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My lucky number is 75898524288+1

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321 LLR Gold: Earned 500,000 credits (656,177)Cullen LLR Silver: Earned 100,000 credits (457,297)ESP LLR Silver: Earned 100,000 credits (437,502)PPS LLR Amethyst: Earned 1,000,000 credits (1,256,334)SoB LLR Amethyst: Earned 1,000,000 credits (1,246,109)SR5 LLR Ruby: Earned 2,000,000 credits (2,193,129)SGS LLR Silver: Earned 100,000 credits (101,658)Woodall LLR Silver: Earned 100,000 credits (292,129)Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (32,498)PPS Sieve Jade: Earned 10,000,000 credits (15,515,229)AP 26/27 Amethyst: Earned 1,000,000 credits (1,491,867)GFN Ruby: Earned 2,000,000 credits (4,245,870)PSA Silver: Earned 100,000 credits (101,309)
Message 75457 - Posted: 11 Apr 2014 | 14:40:01 UTC

One of the primes has been reported to Top-5000: http://primes.utm.edu/primes/page.php?id=117597

Looking at the status page, it would seem that the other prime is for 207394*5^n-1

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321 LLR Gold: Earned 500,000 credits (656,177)Cullen LLR Silver: Earned 100,000 credits (457,297)ESP LLR Silver: Earned 100,000 credits (437,502)PPS LLR Amethyst: Earned 1,000,000 credits (1,256,334)SoB LLR Amethyst: Earned 1,000,000 credits (1,246,109)SR5 LLR Ruby: Earned 2,000,000 credits (2,193,129)SGS LLR Silver: Earned 100,000 credits (101,658)Woodall LLR Silver: Earned 100,000 credits (292,129)Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (32,498)PPS Sieve Jade: Earned 10,000,000 credits (15,515,229)AP 26/27 Amethyst: Earned 1,000,000 credits (1,491,867)GFN Ruby: Earned 2,000,000 credits (4,245,870)PSA Silver: Earned 100,000 credits (101,309)
Message 75609 - Posted: 18 Apr 2014 | 6:11:14 UTC
Last modified: 18 Apr 2014 | 6:12:23 UTC

For the second one: Are we waiting on doublechecker to finish up (unlikely), or on the primary finder to report it (19 days)?

Can we at least announce the first one?

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Discovered 5 mega primesEliminated 3 conjecture "k"sFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes largest primeFound 4 primes in the 2019 Tour de PrimesFound 1 mega prime in the 2019 Tour de PrimesFound 1 prime in the 2019 Tour de Primes Mountain Stage321 LLR Emerald: Earned 50,000,000 credits (50,556,284)Cullen LLR Emerald: Earned 50,000,000 credits (50,296,190)ESP LLR Sapphire: Earned 20,000,000 credits (46,392,310)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (50,309,119)PPS LLR Emerald: Earned 50,000,000 credits (86,138,861)PSP LLR Sapphire: Earned 20,000,000 credits (23,462,639)SoB LLR Emerald: Earned 50,000,000 credits (67,865,553)SR5 LLR Emerald: Earned 50,000,000 credits (50,320,316)SGS LLR Sapphire: Earned 20,000,000 credits (22,598,870)TPS LLR (retired) Bronze: Earned 10,000 credits (43,033)TRP LLR Emerald: Earned 50,000,000 credits (57,441,313)Woodall LLR Sapphire: Earned 20,000,000 credits (43,364,787)321 Sieve Sapphire: Earned 20,000,000 credits (28,170,142)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,142,109)Generalized Cullen/Woodall Sieve Emerald: Earned 50,000,000 credits (50,504,945)PPS Sieve Double Gold: Earned 500,000,000 credits (504,377,255)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,288,222)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,149,354)AP 26/27 Double Silver: Earned 200,000,000 credits (202,968,293)GFN Double Gold: Earned 500,000,000 credits (617,758,790)PSA Double Gold: Earned 500,000,000 credits (531,254,992)
Message 75610 - Posted: 18 Apr 2014 | 9:11:27 UTC - in response to Message 75609.

For the second one: Are we waiting on doublechecker to finish up (unlikely), or on the primary finder to report it (19 days)?

We are still waiting for a wingman to doublecheck.

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Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 13 mega primesEliminated 7 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 1 Fermat divisor2012 Tour de Primes highest prime count2012 Tour de Primes most Mountain Stage primes2015 Tour de Primes highest prime count2016 Tour de Primes highest prime countFound 23 primes in the 2018 Tour de PrimesFound 1 mega prime in the 2018 Tour de PrimesFound 2 primes in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes highest prime countFound 22 primes in the 2019 Tour de Primes321 LLR Double Bronze: Earned 100,000,000 credits (100,829,118)Cullen LLR Double Bronze: Earned 100,000,000 credits (103,870,990)ESP LLR Double Bronze: Earned 100,000,000 credits (123,080,126)Generalized Cullen/Woodall LLR Double Bronze: Earned 100,000,000 credits (108,461,080)PPS LLR Double Silver: Earned 200,000,000 credits (343,575,390)PSP LLR Double Bronze: Earned 100,000,000 credits (108,003,110)SoB LLR Double Bronze: Earned 100,000,000 credits (135,747,083)SR5 LLR Double Silver: Earned 200,000,000 credits (201,220,450)SGS LLR Double Bronze: Earned 100,000,000 credits (160,938,681)TPS LLR (retired) Silver: Earned 100,000 credits (235,439)TRP LLR Double Bronze: Earned 100,000,000 credits (121,443,822)Woodall LLR Double Bronze: Earned 100,000,000 credits (101,447,725)321 Sieve Double Silver: Earned 200,000,000 credits (203,510,966)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve Double Silver: Earned 200,000,000 credits (285,139,652)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,107,846,728)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Double Silver: Earned 200,000,000 credits (203,523,358)TRP Sieve (suspended) Double Silver: Earned 200,000,000 credits (201,489,157)AP 26/27 Double Bronze: Earned 100,000,000 credits (119,562,131)GFN Double Amethyst: Earned 1,000,000,000 credits (1,232,021,835)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 75612 - Posted: 18 Apr 2014 | 10:31:27 UTC - in response to Message 75609.



Can we at least announce the first one?


That's my fault. Real life has been unusually hectic this week, but I should have it done tonight after a grueling 3.5 hour meeting to end the work week. :(


Profile Michael GoetzProject donor
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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,063,182)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (4,220,222)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Ruby: Earned 2,000,000 credits (2,773,744)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (34,158,496)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,012,222)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,046,112)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (7,090,096)GFN Emerald: Earned 50,000,000 credits (64,594,991)PSA Jade: Earned 10,000,000 credits (10,597,947)
Message 75904 - Posted: 25 Apr 2014 | 15:38:59 UTC - in response to Message 75610.

For the second one: Are we waiting on doublechecker to finish up (unlikely), or on the primary finder to report it (19 days)?

We are still waiting for a wingman to doublecheck.


Due in large part to this prime, as well as concern about what could happen when we find a PSP or SoB prime (which can take months to validate), we've modified our procedures somewhat.

Up until now, the procedure for handling discoveries of large primes (i.e., mega primes) on BOINC went like this:

1) Someone discovers a prime.

2) We see that ONE person discovered a prime, but it's still waiting for the wingman. Unless we suspect it's a false positive, we'll start verifying the prime on our own computers. Although we typically say "we're verifying it on the server...", we really mean we're verifying it on our personal computers because they're MUCH faster than the server. (The server isn't AVX.)

3) When the wingman comes in, we notify the prime finder. If he has authorized us to report on his behalf, we proceed to step 4. Otherwise, we send him an email and he either authorizes us to report for him, or he reports it himself. If he doesn't respond in 19 days, we repeat the process with the wingman.

4) Either the user reports the prime to the top 5000 website, or we report it for him or her.

5) We update the appropriate PrimeGrid webpages and publish an announcement about the prime.

6) When the prime is verified on the top 5000 website, the PrimeGrid server makes the prime visible in the prime list.


The problem is that if you have a wingman who uses up the entire deadline, and then doesn't return a result, you just wait and wait and wait. For the really large numbers, that can take months if you're unlucky.

This is the new procedure:

1) Someone discovers a prime.

2) We see that ONE person discovered a prime, but it's still waiting for the wingman. Unless we suspect it's a false positive, we'll start verifying the prime on our own computers. Although we typically say "we're verifying it on the server...", we really mean we're verifying it on our personal computers because they're MUCH faster than the server. (The server isn't AVX.)

3) NEW: Once we've verified that the number is indeed prime (using both LLR and PFGW), if the wingman hasn't responded yet, we modify the workunit so it only requires one task to verify. The prime number then gets validated immediately without the need for a wingman. This permits us to proceed with reporting the prime. The wingman's task is allowed to continue and he will get BOINC credit and be recognized as the double checker if he correctly returns the result.

4) Without waiting for the wingman we notify the prime finder. If he has authorized us to report on his behalf, we proceed to step 5. Otherwise, we send him an email and he either authorizes us to report for him, or he reports it himself.

5) Either the user reports the prime to the top 5000 website, or we report it for him or her.

6) We update the appropriate PrimeGrid webpages and publish an announcement about the prime.

7) When the prime is verified on the top 5000 website, the PrimeGrid server makes the prime visible in the prime list.


What the change means is that there won't be a potentially endless series of bad hosts failing to return the double check task. The double check that is in progress is allowed to finish, and if he returns the result he'll get credit for the double check. But if he doesn't return the result, no additional tasks will be sent out for the purpose of double checking.


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321 LLR Gold: Earned 500,000 credits (656,177)Cullen LLR Silver: Earned 100,000 credits (457,297)ESP LLR Silver: Earned 100,000 credits (437,502)PPS LLR Amethyst: Earned 1,000,000 credits (1,256,334)SoB LLR Amethyst: Earned 1,000,000 credits (1,246,109)SR5 LLR Ruby: Earned 2,000,000 credits (2,193,129)SGS LLR Silver: Earned 100,000 credits (101,658)Woodall LLR Silver: Earned 100,000 credits (292,129)Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (32,498)PPS Sieve Jade: Earned 10,000,000 credits (15,515,229)AP 26/27 Amethyst: Earned 1,000,000 credits (1,491,867)GFN Ruby: Earned 2,000,000 credits (4,245,870)PSA Silver: Earned 100,000 credits (101,309)
Message 75908 - Posted: 26 Apr 2014 | 3:54:16 UTC

I would go one further. For SR5, if LLR permits it*, only do the initial part of test on the client. Skip the proving part, and report the results straightaway. The admins will be doing the rigorous proof offline, so nothing's lost. The total time to report the prime will come down. This will also obviate this thread (long running task = stuck!)

* Whether LLR can be configured for only the first part: There are three settings that I can find in the documentation
ForcePRP=1 : Do only a PRP test, even if a deterministic one is possible.
LucasPRPtest=1 : For a PRP test, use only the Lucas+Frobenius algorithm.
FermatPRPtest=1 : For a PRP test, use only the Fermat SPRP algorithm.

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,063,182)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (4,220,222)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Ruby: Earned 2,000,000 credits (2,773,744)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (34,158,496)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,012,222)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,046,112)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (7,090,096)GFN Emerald: Earned 50,000,000 credits (64,594,991)PSA Jade: Earned 10,000,000 credits (10,597,947)
Message 75915 - Posted: 26 Apr 2014 | 12:33:36 UTC

Here's the second SR5 prime from April 9th: http://primes.utm.edu/primes/page.php?id=117731

Congratulations Honza!

207394*5^1612573-1

We can scratch k=207394 off the Riesel base 5 list.
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Found 2 primes in the 2018 Tour de Primes321 LLR Turquoise: Earned 5,000,000 credits (5,008,573)Cullen LLR Turquoise: Earned 5,000,000 credits (5,005,909)ESP LLR Turquoise: Earned 5,000,000 credits (5,303,526)Generalized Cullen/Woodall LLR Turquoise: Earned 5,000,000 credits (5,202,873)PPS LLR Turquoise: Earned 5,000,000 credits (5,200,064)PSP LLR Turquoise: Earned 5,000,000 credits (5,021,564)SoB LLR Turquoise: Earned 5,000,000 credits (8,851,996)SR5 LLR Turquoise: Earned 5,000,000 credits (5,000,482)SGS LLR Ruby: Earned 2,000,000 credits (4,153,908)TRP LLR Ruby: Earned 2,000,000 credits (3,501,055)Woodall LLR Ruby: Earned 2,000,000 credits (3,007,050)321 Sieve Amethyst: Earned 1,000,000 credits (1,796,721)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (268,250)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (10,000,502)PPS Sieve Double Silver: Earned 200,000,000 credits (282,503,284)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,133)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,000,970)AP 26/27 Double Bronze: Earned 100,000,000 credits (100,003,605)GFN Double Bronze: Earned 100,000,000 credits (100,000,025)PSA Double Silver: Earned 200,000,000 credits (200,000,001)
Message 75951 - Posted: 27 Apr 2014 | 16:53:25 UTC

Yet another SR5 k has been obliterated!

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The "Shut up already!" badge:  This loud mouth has mansplained on the forums over 10 thousand times!  Sheesh!!!Discovered the World's First GFN-19 prime!!!Discovered 1 mega primeFound 1 prime in the 2018 Tour de PrimesFound 1 prime in the 2019 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,063,182)Cullen LLR Ruby: Earned 2,000,000 credits (2,005,249)ESP LLR Ruby: Earned 2,000,000 credits (4,220,222)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,145,754)PPS LLR Ruby: Earned 2,000,000 credits (2,773,744)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Sapphire: Earned 20,000,000 credits (34,158,496)SR5 LLR Turquoise: Earned 5,000,000 credits (8,293,415)SGS LLR Ruby: Earned 2,000,000 credits (2,012,222)TRP LLR Ruby: Earned 2,000,000 credits (2,737,347)Woodall LLR Ruby: Earned 2,000,000 credits (2,195,123)321 Sieve Turquoise: Earned 5,000,000 credits (5,046,112)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Turquoise: Earned 5,000,000 credits (5,059,304)PPS Sieve Sapphire: Earned 20,000,000 credits (20,110,788)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,035,522)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,051,121)AP 26/27 Turquoise: Earned 5,000,000 credits (7,090,096)GFN Emerald: Earned 50,000,000 credits (64,594,991)PSA Jade: Earned 10,000,000 credits (10,597,947)
Message 75954 - Posted: 27 Apr 2014 | 17:41:49 UTC

This one was found on the 25th: http://primes.utm.edu/primes/page.php?id=117737

Congratulations Scott!
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Discovered 5 mega primesEliminated 3 conjecture "k"sFound 2 primes in the 2018 Tour de PrimesFound 1 prime in the 2018 Tour de Primes Mountain Stage2019 Tour de Primes largest primeFound 4 primes in the 2019 Tour de PrimesFound 1 mega prime in the 2019 Tour de PrimesFound 1 prime in the 2019 Tour de Primes Mountain Stage321 LLR Emerald: Earned 50,000,000 credits (50,556,284)Cullen LLR Emerald: Earned 50,000,000 credits (50,296,190)ESP LLR Sapphire: Earned 20,000,000 credits (46,392,310)Generalized Cullen/Woodall LLR Emerald: Earned 50,000,000 credits (50,309,119)PPS LLR Emerald: Earned 50,000,000 credits (86,138,861)PSP LLR Sapphire: Earned 20,000,000 credits (23,462,639)SoB LLR Emerald: Earned 50,000,000 credits (67,865,553)SR5 LLR Emerald: Earned 50,000,000 credits (50,320,316)SGS LLR Sapphire: Earned 20,000,000 credits (22,598,870)TPS LLR (retired) Bronze: Earned 10,000 credits (43,033)TRP LLR Emerald: Earned 50,000,000 credits (57,441,313)Woodall LLR Sapphire: Earned 20,000,000 credits (43,364,787)321 Sieve Sapphire: Earned 20,000,000 credits (28,170,142)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,142,109)Generalized Cullen/Woodall Sieve Emerald: Earned 50,000,000 credits (50,504,945)PPS Sieve Double Gold: Earned 500,000,000 credits (504,377,255)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,288,222)TRP Sieve (suspended) Sapphire: Earned 20,000,000 credits (20,149,354)AP 26/27 Double Silver: Earned 200,000,000 credits (202,968,293)GFN Double Gold: Earned 500,000,000 credits (617,758,790)PSA Double Gold: Earned 500,000,000 credits (531,254,992)
Message 75968 - Posted: 28 Apr 2014 | 11:30:53 UTC

Congrats Scott.

Looks like we have made TOP5000 verification process busy for a while :-)
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Message boards : Sierpinski/Riesel Base 5 Problem : SR5 prime found or stuck task?

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