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Message boards : News : World Record Generalized Fermat Prime

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JohnProject donor
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Joined: 21 Feb 06
Posts: 2876
ID: 2449
Credit: 2,681,934
RAC: 0
321 LLR Bronze: Earned 10,000 credits (11,773)Cullen LLR Bronze: Earned 10,000 credits (14,945)ESP LLR Bronze: Earned 10,000 credits (26,855)PPS LLR Bronze: Earned 10,000 credits (84,876)PSP LLR Bronze: Earned 10,000 credits (15,311)SoB LLR Bronze: Earned 10,000 credits (21,440)SR5 LLR Bronze: Earned 10,000 credits (29,270)SGS LLR Bronze: Earned 10,000 credits (26,616)TPS LLR (retired) Bronze: Earned 10,000 credits (36,288)TRP LLR Bronze: Earned 10,000 credits (41,655)Woodall LLR Bronze: Earned 10,000 credits (15,807)321 Sieve (suspended) Bronze: Earned 10,000 credits (20,014)Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (23,405)PPS Sieve Bronze: Earned 10,000 credits (36,192)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (20,306)TRP Sieve (suspended) Bronze: Earned 10,000 credits (21,738)GFN Bronze: Earned 10,000 credits (86,217)PSA Ruby: Earned 2,000,000 credits (2,143,756)
Message 42828 - Posted: 6 Nov 2011 | 13:55:57 UTC
Last modified: 20 Nov 2011 | 3:38:11 UTC

On 29 Oct 2011 11:31:47 UTC, PrimeGrid’s PRPNet found the largest known Generalized Fermat Prime: 361658^262144+1

The mega prime is 1,457,075 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 1st for Generalized Fermat Primes and 24th overall.

The discovery was made by Michel Johnson of Germany using an NVIDIA GeForce GTX 550 Ti in an AMD PHENOM II X6 1100T @ 3.3GHz system with 4GB RAM, running 32 bit Windows XP. This GPU took about 1 hour and 45 minutes to probable prime (PRP) test with GenefCUDA. (NOTE: This is the first prime found by geneferCUDA!) Michel is a member of the SETI.Germany team.

The prime was confirmed in 50 hours and 40 minutes using pfgw64 on an Intel Xeon 5410 @ 2.33GHz with 16GB RAM, running Windows Server 2003 x64.

For more details, please see the official announcement.
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PPS Sieve Bronze: Earned 10,000 credits (22,659)
Message 42881 - Posted: 7 Nov 2011 | 9:58:46 UTC

<3
AmAzing

Profile Rick Reynolds
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Posts: 6411
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Credit: 3,452,897,230
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Discovered 1 mega primeFound 2 primes in the 2018 Tour de Primes321 LLR Ruby: Earned 2,000,000 credits (2,148,880)Cullen LLR Ruby: Earned 2,000,000 credits (2,773,730)ESP LLR Ruby: Earned 2,000,000 credits (2,084,793)Generalized Cullen/Woodall LLR Ruby: Earned 2,000,000 credits (2,686,707)PPS LLR Jade: Earned 10,000,000 credits (11,171,386)PSP LLR Ruby: Earned 2,000,000 credits (2,010,187)SoB LLR Ruby: Earned 2,000,000 credits (2,798,257)SR5 LLR Jade: Earned 10,000,000 credits (11,169,992)SGS LLR Turquoise: Earned 5,000,000 credits (6,112,588)TRP LLR Turquoise: Earned 5,000,000 credits (5,110,887)Woodall LLR Ruby: Earned 2,000,000 credits (3,612,313)321 Sieve (suspended) Bronze: Earned 10,000 credits (54,591)Cullen/Woodall Sieve (suspended) Double Bronze: Earned 100,000,000 credits (127,922,665)Generalized Cullen/Woodall Sieve Jade: Earned 10,000,000 credits (12,284,704)PPS Sieve Double Amethyst: Earned 1,000,000,000 credits (1,655,954,320)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Turquoise: Earned 5,000,000 credits (8,134,964)TRP Sieve (suspended) Turquoise: Earned 5,000,000 credits (7,013,696)AP 26/27 Double Bronze: Earned 100,000,000 credits (105,821,482)GFN Double Bronze: Earned 100,000,000 credits (113,330,600)PSA Double Amethyst: Earned 1,000,000,000 credits (1,370,700,486)
Message 42902 - Posted: 7 Nov 2011 | 19:17:11 UTC

A big hearty congratulations !
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Message boards : News : World Record Generalized Fermat Prime

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