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Message boards : Cullen/Woodall prime search : What is searched for Cullen & Woodal?

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Jonas Skendelis
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Joined: 12 Dec 10
Posts: 18
ID: 76600
Credit: 6,388,131
RAC: 3,542
321 LLR Amethyst: Earned 1,000,000 credits (1,160,582)Cullen LLR Amethyst: Earned 1,000,000 credits (1,533,981)PPS LLR Bronze: Earned 10,000 credits (19,797)PSP LLR Silver: Earned 100,000 credits (161,143)SoB LLR Silver: Earned 100,000 credits (113,929)SR5 LLR Bronze: Earned 10,000 credits (15,176)SGS LLR Gold: Earned 500,000 credits (780,284)TRP LLR Amethyst: Earned 1,000,000 credits (1,061,606)Woodall LLR Amethyst: Earned 1,000,000 credits (1,191,486)PPS Sieve Silver: Earned 100,000 credits (318,265)TRP Sieve (suspended) Bronze: Earned 10,000 credits (10,603)
Message 107648 - Posted: 5 May 2017 | 5:21:10 UTC

New generized cullen/woodal project states that it is searching primes for n·bn±1 for b=(13, 25, 29, 41, 47, 49, 53, 55, 69, 73, 101, 109, 116, 121)
It is interesting, what parameters (n. b) are for "old" Cullen and Woodal projects?
Tnx, -js-

Profile vasyannyasha
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Joined: 20 Feb 17
Posts: 12
ID: 493939
Credit: 355,754
RAC: 9,502
Generalized Cullen/Woodall Sieve Bronze: Earned 10,000 credits (23,485)PPS Sieve Silver: Earned 100,000 credits (198,889)GFN Bronze: Earned 10,000 credits (49,026)PSA Bronze: Earned 10,000 credits (76,540)
Message 107649 - Posted: 5 May 2017 | 6:12:00 UTC

Look here for Cullen http://www.primegrid.com/stats_cullen_llr.php
Look here for Woodall http://www.primegrid.com/stats_woodall_llr.php
base of "old" Woodall and Cullen prime searches is 2.
____________

Michael GoetzProject donor
Volunteer moderator
Project scientist
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Joined: 21 Jan 10
Posts: 9640
ID: 53948
Credit: 107,045,267
RAC: 94,953
321 LLR Amethyst: Earned 1,000,000 credits (1,169,719)Cullen LLR Amethyst: Earned 1,000,000 credits (1,157,331)ESP LLR Amethyst: Earned 1,000,000 credits (1,179,211)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,330,821)PPS LLR Amethyst: Earned 1,000,000 credits (1,254,873)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Ruby: Earned 2,000,000 credits (2,130,789)SR5 LLR Turquoise: Earned 5,000,000 credits (6,048,315)SGS LLR Amethyst: Earned 1,000,000 credits (1,680,461)TRP LLR Amethyst: Earned 1,000,000 credits (1,183,026)Woodall LLR Amethyst: Earned 1,000,000 credits (1,145,077)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,085,723)PPS Sieve Jade: Earned 10,000,000 credits (18,175,834)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 (5,881,239)GFN Sapphire: Earned 20,000,000 credits (42,505,034)PSA Jade: Earned 10,000,000 credits (10,028,791)
Message 107655 - Posted: 5 May 2017 | 10:57:16 UTC - in response to Message 107648.

New generized cullen/woodal project states that it is searching primes for n·bn±1 for b=(13, 25, 29, 41, 47, 49, 53, 55, 69, 73, 101, 109, 116, 121)
It is interesting, what parameters (n. b) are for "old" Cullen and Woodal projects?
Tnx, -js-


Cullen and Woodall differ from GCW in that b=2 and we're looking for as many primes as we can find. With GCW, once any prime is found in a base we stop searching that base. With Cullen and Woodall, we'll keep searching for more primes.
____________

Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

Jonas Skendelis
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Joined: 12 Dec 10
Posts: 18
ID: 76600
Credit: 6,388,131
RAC: 3,542
321 LLR Amethyst: Earned 1,000,000 credits (1,160,582)Cullen LLR Amethyst: Earned 1,000,000 credits (1,533,981)PPS LLR Bronze: Earned 10,000 credits (19,797)PSP LLR Silver: Earned 100,000 credits (161,143)SoB LLR Silver: Earned 100,000 credits (113,929)SR5 LLR Bronze: Earned 10,000 credits (15,176)SGS LLR Gold: Earned 500,000 credits (780,284)TRP LLR Amethyst: Earned 1,000,000 credits (1,061,606)Woodall LLR Amethyst: Earned 1,000,000 credits (1,191,486)PPS Sieve Silver: Earned 100,000 credits (318,265)TRP Sieve (suspended) Bronze: Earned 10,000 credits (10,603)
Message 107657 - Posted: 5 May 2017 | 11:45:33 UTC - in response to Message 107655.

ok, tnx, now it's clear... Just it was interesting, how big is n for Cullen and Woodal for the moment...

Michael GoetzProject donor
Volunteer moderator
Project scientist
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Joined: 21 Jan 10
Posts: 9640
ID: 53948
Credit: 107,045,267
RAC: 94,953
321 LLR Amethyst: Earned 1,000,000 credits (1,169,719)Cullen LLR Amethyst: Earned 1,000,000 credits (1,157,331)ESP LLR Amethyst: Earned 1,000,000 credits (1,179,211)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,330,821)PPS LLR Amethyst: Earned 1,000,000 credits (1,254,873)PSP LLR Ruby: Earned 2,000,000 credits (2,632,269)SoB LLR Ruby: Earned 2,000,000 credits (2,130,789)SR5 LLR Turquoise: Earned 5,000,000 credits (6,048,315)SGS LLR Amethyst: Earned 1,000,000 credits (1,680,461)TRP LLR Amethyst: Earned 1,000,000 credits (1,183,026)Woodall LLR Amethyst: Earned 1,000,000 credits (1,145,077)321 Sieve (suspended) Silver: Earned 100,000 credits (200,576)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,170,256)Generalized Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,085,723)PPS Sieve Jade: Earned 10,000,000 credits (18,175,834)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 (5,881,239)GFN Sapphire: Earned 20,000,000 credits (42,505,034)PSA Jade: Earned 10,000,000 credits (10,028,791)
Message 107660 - Posted: 5 May 2017 | 13:36:33 UTC - in response to Message 107657.

ok, tnx, now it's clear... Just it was interesting, how big is n for Cullen and Woodal for the moment...


Look to the left of this page. See the menu with all the links? Under "Other", click on "Subproject Status". That brings you to a page that shows a summary for each sub project. Click on the "Range statistics" link under Cullen or Woodall to get to a more detailed page. You'll find the information you're looking for on those detailed statistics pages.

EDIT: Actually, you won't. That information should be there, but it's not. It tells you approximately where the leading edge n is, but not the exact number.

Current Cullen leading edge is n=15478540
Current Woodall leading edge is n=16130439
____________

Please do not PM me with support questions. They will usually go unanswered. Ask on the forums instead. Thank you!

JeppeSNProject donor
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Joined: 5 Apr 14
Posts: 566
ID: 306875
Credit: 7,694,859
RAC: 1,931
PPS LLR Bronze: Earned 10,000 credits (64,849)TRP LLR Bronze: Earned 10,000 credits (14,746)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 107675 - Posted: 5 May 2017 | 20:38:47 UTC

Maybe Jonas Skendelis meant to ask: For other b values with 2<b<121 than those mentioned, i.e. {13, 25, 29, 41, 47, 49, 53, 55, 69, 73, 101, 109, 116, 121}, what are the already known n values such that n*b^n ± 1 are "old" primes (but still generalized Cullen/Woodall)? /JeppeSN

Profile vasyannyasha
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Joined: 20 Feb 17
Posts: 12
ID: 493939
Credit: 355,754
RAC: 9,502
Generalized Cullen/Woodall Sieve Bronze: Earned 10,000 credits (23,485)PPS Sieve Silver: Earned 100,000 credits (198,889)GFN Bronze: Earned 10,000 credits (49,026)PSA Bronze: Earned 10,000 credits (76,540)
Message 107740 - Posted: 8 May 2017 | 15:09:48 UTC
Last modified: 8 May 2017 | 15:12:52 UTC

Here is list of all bases 3 through 10000:
For Wodall's - http://harvey563.tripod.com/GWlist.txt
Here is list of all bases 3 through 100:
For Cullen's - http://www.loeh.name/guenter/gc/status.html
You can see, that all bases, taken by PG, haven't primes.
____________

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Message boards : Cullen/Woodall prime search : What is searched for Cullen & Woodal?

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