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Message boards : News : Another GFN-262144 Find!!

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Scott BrownProject donor
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Joined: 17 Oct 05
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ID: 1178
Credit: 7,147,082,625
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Discovered the World's First base 116 Generalized Cullen prime!!!Discovered 25 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 Primes2020 Tour de Primes highest prime scoreFound 21 primes in the 2020 Tour de PrimesFound 4 mega primes in the 2020 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 Gold: Earned 500,000,000 credits (559,679,804)PSP LLR Double Bronze: Earned 100,000,000 credits (126,982,721)SoB LLR Double Bronze: Earned 100,000,000 credits (135,747,083)SR5 LLR Double Silver: Earned 200,000,000 credits (214,194,272)SGS LLR Double Bronze: Earned 100,000,000 credits (174,608,593)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 (210,818,608)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 (2,173,321,661)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 (240,124,391)GFN Double Amethyst: Earned 1,000,000,000 credits (1,594,741,419)PSA Double Silver: Earned 200,000,000 credits (259,058,048)
Message 138373 - Posted: 27 Feb 2020 | 3:16:52 UTC

On 16 February 2020, 01:13:42 UTC, PrimeGrid's Generalized Fermat Prime Search found the Mega Prime:

9812766^262144+1

The prime is 1,832,857 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 15th for Generalized Fermat primes and 87th overall.

The discovery was made by Tom Greer (tng*) of the United States using an NVidia GeForce RTX 2070 in an Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz with 16GB RAM, running Microsoft Windows 10 Core x64 Edition. This GPU took about 17 minutes to complete the probable prime (PRP) test using GeneferOCL2. Tom Greer is a member of the Sicituradastra. team.

The prime was verified on 16 February 2020, 01:39:49 UTC by Viktor Svantner (Viktor Svantner) of the Czech Republic using a GeForce GTX 1080 Ti in an AMD Ryzen Threadripper 2990WX 32-Core Processor with 128GB RAM, running Microsoft Windows 10 Professional x64 Edition. This computer took about 22 minutes to complete the probable prime (PRP) test using GeneferOCL2. Viktor Svantner is a member of the Czech National Team team.

The PRP was confirmed prime by an Intel(R) Xeon(R) CPU E3-1240 v6 @ 3.70GHz with 4GB RAM, running Linux Debian. This computer took about 6 hours, 6 minutes to complete the primality test using LLR.

For more details, please see the official announcement.

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Message boards : News : Another GFN-262144 Find!!

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