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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
Posts: 1678
ID: 168418
Credit: 3,781,118,742
RAC: 4,520,287
321 LLR Jade: Earned 10,000,000 credits (12,513,261)Cullen LLR Jade: Earned 10,000,000 credits (11,032,867)ESP LLR Jade: Earned 10,000,000 credits (10,214,320)Generalized Cullen/Woodall LLR Jade: Earned 10,000,000 credits (11,686,754)PPS LLR Jade: Earned 10,000,000 credits (12,221,654)PSP LLR Jade: Earned 10,000,000 credits (17,826,235)SoB LLR Jade: Earned 10,000,000 credits (12,238,176)SR5 LLR Jade: Earned 10,000,000 credits (11,127,177)SGS LLR Jade: Earned 10,000,000 credits (10,477,580)TRP LLR Jade: Earned 10,000,000 credits (13,244,186)Woodall LLR Jade: Earned 10,000,000 credits (11,647,747)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (18,073,742)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,000,651,011)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 (2,389,576,199)PSA Double Bronze: Earned 100,000,000 credits (168,236,054)
Message 101359 - Posted: 27 Nov 2016 | 17:02:06 UTC
Last modified: 27 Nov 2016 | 17:34:27 UTC

On 24 November 2016, 03:05:38 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:

2042774^262144+1

The prime is 1,654,187 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 5th for Generalized Fermat primes and 47th overall.

The discovery was made by Tsuyoshi Ohsugi (motsu) of Japan using an NVIDIA GeForce GTX 750 Ti in an AMD Phenom(tm) II X6 1065T CPU with 12GB RAM, running Microsoft Windows 10 Professional. This GPU took about 1 hour 19 minutes to probable prime (PRP) test with GeneferOCL3. Tsuyoshi is a member of the Gridcoin team.

The prime was verified on 24 November 2016, 08:03:02 UTC by Michael Mamanakis (Michael Mamanakis) of the United States using an NVIDIA GeForce GTX 1080 in an Intel(R) Xeon(R) CPU E5-1603 @ 2.80GHz with 32GB RAM, running Microsoft Windows 7 Enterprise Edition. This GPU took about 25 minutes to probable prime (PRP) test with GeneferOCL4.

The PRP was confirmed prime by an Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz with 12GB RAM, running Windows 7 Professional. This computer took about 20 hours 36 minutes to complete the primality test using LLR.

For more information, please see the official announcement.

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Message boards : News : GFN-262144 Mega Prime!

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