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Message boards : News : GFN-524288 Mega Prime!

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Van ZimmermanProject donor
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Joined: 30 Aug 12
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Discovered the World's First GFN-20 prime!!!Discovered 2 mega primesFound 1 prime in the 2018 Tour de Primes321 LLR Jade: Earned 10,000,000 credits (12,590,282)Cullen LLR Jade: Earned 10,000,000 credits (11,383,059)ESP LLR Jade: Earned 10,000,000 credits (10,638,315)Generalized Cullen/Woodall LLR Jade: Earned 10,000,000 credits (12,547,227)PPS LLR Sapphire: Earned 20,000,000 credits (20,030,899)PSP LLR Jade: Earned 10,000,000 credits (19,679,114)SoB LLR Sapphire: Earned 20,000,000 credits (21,208,789)SR5 LLR Jade: Earned 10,000,000 credits (13,730,961)SGS LLR Jade: Earned 10,000,000 credits (11,287,785)TRP LLR Jade: Earned 10,000,000 credits (17,909,751)Woodall LLR Jade: Earned 10,000,000 credits (12,964,368)Generalized Cullen/Woodall Sieve Sapphire: Earned 20,000,000 credits (20,199,057)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 (50,493,027)GFN Double Ruby: Earned 2,000,000,000 credits (2,785,454,834)PSA Double Bronze: Earned 100,000,000 credits (168,236,054)
Message 113734 - Posted: 24 Jan 2018 | 13:46:31 UTC

On 15 January 2018, 01:27:20 UTC, PrimeGrid’s Generalized Fermat Prime Search found the Generalized Fermat mega prime:

1880370^524288+1

The prime is 3,289,511 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 2nd for Generalized Fermat primes and 22nd overall.

The discovery was made by Scott Brown (Scott Brown) of the United States using an NVIDIA GeForce GTX 960 in an Intel(R) Core(TM) i7-2600 CPU at 3.40GHz with 8GB RAM, running Windows 10 Core Edition. This GPU took about 2 hours 27 minutes to probable prime (PRP) test with GeneferOCL4. Scott is a member of the Aggie The Pew team.

The prime was verified on 15 January 2018, 13:47:11 UTC by user tangwei@CN of China using an NVIDIA GeForce GTX 1070 in an Intel(R) Xeon(R) E3-1230v2 CPU @ 3.30GHz with 8GB RAM, running Windows 10 Professional Edition. This GPU took about 59 minutes to probable prime (PRP) test with GeneferOCL4. Tangwei@CN is a member of Team China.

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 20 hours 40 minutes to complete the primality test using LLR.

For more details, please see the official announcement.

JeppeSNProject donor
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PPS LLR Silver: Earned 100,000 credits (183,034)SoB LLR Bronze: Earned 10,000 credits (92,950)TRP LLR Bronze: Earned 10,000 credits (14,746)PSA Turquoise: Earned 5,000,000 credits (7,614,290)
Message 115312 - Posted: 20 Feb 2018 | 21:29:14 UTC

And today we have proved, by testing and double checking, that this prime is in fact the 5th GFN-19 prime, by size. /JeppeSN

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Message boards : News : GFN-524288 Mega Prime!

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