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Message boards : Proth Prime Search : New record Fermat divisor?

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Christopher Siegert
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Joined: 5 Jul 09
Posts: 232
ID: 42986
Credit: 77,011,345
RAC: 0
321 LLR Amethyst: Earned 1,000,000 credits (1,041,657)Cullen LLR Amethyst: Earned 1,000,000 credits (1,366,558)PPS LLR Sapphire: Earned 20,000,000 credits (22,177,547)PSP LLR Amethyst: Earned 1,000,000 credits (1,521,444)SoB LLR Amethyst: Earned 1,000,000 credits (1,751,070)SR5 LLR Amethyst: Earned 1,000,000 credits (1,100,031)SGS LLR Amethyst: Earned 1,000,000 credits (1,014,953)TRP LLR Ruby: Earned 2,000,000 credits (3,647,371)Woodall LLR Amethyst: Earned 1,000,000 credits (1,479,507)Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (41,181)PPS Sieve Sapphire: Earned 20,000,000 credits (29,702,366)TRP Sieve (suspended) Silver: Earned 100,000 credits (206,682)GFN Jade: Earned 10,000,000 credits (11,960,980)
Message 65482 - Posted: 18 May 2013 | 6:27:01 UTC

Where's the news on this?!

"On May 14, and as part of PrimeGrid's Proth Prime Search, Marshall Bishop found that 57 ยท 2^2747499 + 1 divides F(2,747,497). This is now the largest Fermat number known to be composite."

http://www.prothsearch.com/fermat.html

Scott BrownProject donor
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Joined: 17 Oct 05
Posts: 1974
ID: 1178
Credit: 6,864,578,595
RAC: 5,890,857
Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 19 mega primesEliminated 7 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 2 Fermat divisors2012 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 (110,931,288)Cullen LLR Double Bronze: Earned 100,000,000 credits (103,870,990)ESP LLR Double Bronze: Earned 100,000,000 credits (137,499,413)Generalized Cullen/Woodall LLR Double Bronze: Earned 100,000,000 credits (108,461,080)PPS LLR Double Silver: Earned 200,000,000 credits (476,439,841)PSP LLR Double Bronze: Earned 100,000,000 credits (126,923,852)SoB LLR Double Bronze: Earned 100,000,000 credits (135,747,083)SR5 LLR Double Silver: Earned 200,000,000 credits (201,224,339)SGS LLR Double Bronze: Earned 100,000,000 credits (162,580,085)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 (210,776,526)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve (suspended) Double Silver: Earned 200,000,000 credits (285,139,652)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,130,584,123)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 Silver: Earned 200,000,000 credits (214,366,438)GFN Double Amethyst: Earned 1,000,000,000 credits (1,489,089,530)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 65489 - Posted: 18 May 2013 | 13:16:56 UTC - in response to Message 65482.


Not yet...I am still waiting on the response from the double-checker before I can finalize the official announcement.

Scott BrownProject donor
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Joined: 17 Oct 05
Posts: 1974
ID: 1178
Credit: 6,864,578,595
RAC: 5,890,857
Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 19 mega primesEliminated 7 conjecture "k"sDiscovered 1 Sophie Germain pairDiscovered 2 Fermat divisors2012 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 (110,931,288)Cullen LLR Double Bronze: Earned 100,000,000 credits (103,870,990)ESP LLR Double Bronze: Earned 100,000,000 credits (137,499,413)Generalized Cullen/Woodall LLR Double Bronze: Earned 100,000,000 credits (108,461,080)PPS LLR Double Silver: Earned 200,000,000 credits (476,439,841)PSP LLR Double Bronze: Earned 100,000,000 credits (126,923,852)SoB LLR Double Bronze: Earned 100,000,000 credits (135,747,083)SR5 LLR Double Silver: Earned 200,000,000 credits (201,224,339)SGS LLR Double Bronze: Earned 100,000,000 credits (162,580,085)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 (210,776,526)Cullen/Woodall Sieve (suspended) Emerald: Earned 50,000,000 credits (83,794,448)Generalized Cullen/Woodall Sieve (suspended) Double Silver: Earned 200,000,000 credits (285,139,652)PPS Sieve Double Ruby: Earned 2,000,000,000 credits (2,130,584,123)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 Silver: Earned 200,000,000 credits (214,366,438)GFN Double Amethyst: Earned 1,000,000,000 credits (1,489,089,530)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 65879 - Posted: 25 May 2013 | 15:33:47 UTC - in response to Message 65489.

I never got a response from the double-checker via PM or e-mail, so I have posted the news so that it is not too out of date. If anyone has contact with the double-checker, I will be glad to update the news post and official announcement with their preferred name if they wish.

Congratulations to Marshall! It is a very nice find and knocks off the old world record found by yours truly almost two years ago.

Now, let's see if we can find another one!


WintermuteProject donor
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Joined: 23 Jul 11
Posts: 1
ID: 106228
Credit: 60,540,067
RAC: 0
Discovered 1 Fermat divisor321 LLR Gold: Earned 500,000 credits (942,219)Cullen LLR Silver: Earned 100,000 credits (401,130)PPS LLR Jade: Earned 10,000,000 credits (13,415,008)PSP LLR Amethyst: Earned 1,000,000 credits (1,364,789)SoB LLR Silver: Earned 100,000 credits (176,890)SR5 LLR Jade: Earned 10,000,000 credits (16,571,324)SGS LLR Turquoise: Earned 5,000,000 credits (7,075,045)TRP LLR Silver: Earned 100,000 credits (481,279)Woodall LLR Amethyst: Earned 1,000,000 credits (1,467,509)PPS Sieve Jade: Earned 10,000,000 credits (16,557,855)TRP Sieve (suspended) Bronze: Earned 10,000 credits (56,667)GFN Ruby: Earned 2,000,000 credits (2,028,163)
Message 66018 - Posted: 28 May 2013 | 8:28:16 UTC - in response to Message 65879.

Thanks! Hope to keep finding more.

Message boards : Proth Prime Search : New record Fermat divisor?

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