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Message boards : News : GFN-262144 Mega Prime!

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Van ZimmermanProject donor
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Joined: 30 Aug 12
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Discovered 2 mega primesDiscovered the World's First GFN-20!!!321 LLR Jade: Earned 10,000,000 credits (12,585,450)Cullen LLR Jade: Earned 10,000,000 credits (11,368,455)ESP LLR Jade: Earned 10,000,000 credits (10,632,510)Generalized Cullen/Woodall LLR Jade: Earned 10,000,000 credits (12,277,814)PPS LLR Jade: Earned 10,000,000 credits (14,425,228)PSP LLR Jade: Earned 10,000,000 credits (17,826,235)SoB LLR Sapphire: Earned 20,000,000 credits (20,745,615)SR5 LLR Jade: Earned 10,000,000 credits (12,378,201)SGS LLR Jade: Earned 10,000,000 credits (10,908,646)TRP LLR Jade: Earned 10,000,000 credits (15,376,393)Woodall LLR Jade: Earned 10,000,000 credits (12,863,665)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (18,073,742)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,051,222,753)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Jade: Earned 10,000,000 credits (10,189,695)TRP Sieve (suspended) Jade: Earned 10,000,000 credits (10,102,079)AP 26/27 Emerald: Earned 50,000,000 credits (50,488,984)GFN Double Ruby: Earned 2,000,000,000 credits (2,632,911,261)PSA Double Bronze: Earned 100,000,000 credits (168,236,054)
Message 113257 - Posted: 12 Jan 2018 | 11:47:22 UTC

On 10 January 2018, 12:26:12 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:

3853792^262144+1

The prime is 1,726,452 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 6th for Generalized Fermat primes and 55th overall.

The discovery was made by Rod Skinner (rjs5) of the United States using an NVIDIA GeForce GTX 1080 in an Intel(R) Core(TM) i7-8700K CPU at 3.70GHz with 16GB RAM, running Linux. This GPU took about 18 minutes to probable prime (PRP) test with GeneferOCL3. Rod is a member of the Intel Corporation team.

The PRP was confirmed prime by an Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz with 16GB RAM, running Microsoft Windows 10 Professional. This computer took about 6 hours 59 minutes to complete the primality test using LLR.

For more details, please see the official announcement.

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Message boards : News : GFN-262144 Mega Prime!

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