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Message boards : News : World Record Generalized Cullen Prime

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JohnProject donor
Honorary cruncher
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Joined: 21 Feb 06
Posts: 2875
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 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 48137 - Posted: 30 Jan 2012 | 2:12:11 UTC
Last modified: 2 Mar 2012 | 15:43:28 UTC

On 29 Jan 2012, 08:10:03 UTC, PrimeGrid’s PRPNet found the largest known generalized Cullen prime: 427194*113^427194+1

The prime is 877,069 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 1st for generalized Cullen primes and 57th overall.

The discovery was made by Ricky L. Hubbard (MiHost) of the United States using an AMD Phenom II X6 1090t @ 3.2GHz with 8GB RAM, running Windows 7. This computer took 7 hours and 15 minutes to complete the probable prime test using pfgw64 and 7 hours 20 minutes to complete the primality test again using pfgw64. Ricky is a member of the AMD Users Team.

For more details, please see the official announcement.
____________

Michael Millerick
Volunteer tester
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Joined: 4 Feb 09
Posts: 706
ID: 35074
Credit: 174,441,096
RAC: 100,748
Found 3 primes in the 2020 Tour de Primes321 LLR Amethyst: Earned 1,000,000 credits (1,063,954)Cullen LLR Amethyst: Earned 1,000,000 credits (1,041,705)ESP LLR Turquoise: Earned 5,000,000 credits (5,192,769)Generalized Cullen/Woodall LLR Amethyst: Earned 1,000,000 credits (1,319,313)PPS LLR Jade: Earned 10,000,000 credits (10,308,922)PSP LLR Ruby: Earned 2,000,000 credits (2,012,651)SoB LLR Amethyst: Earned 1,000,000 credits (1,064,898)SR5 LLR Ruby: Earned 2,000,000 credits (2,085,475)SGS LLR Amethyst: Earned 1,000,000 credits (1,320,684)TRP LLR Amethyst: Earned 1,000,000 credits (1,026,807)Woodall LLR Amethyst: Earned 1,000,000 credits (1,042,977)321 Sieve Turquoise: Earned 5,000,000 credits (5,235,253)Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (4,911,344)Generalized Cullen/Woodall Sieve (suspended) Ruby: Earned 2,000,000 credits (2,077,092)PPS Sieve Emerald: Earned 50,000,000 credits (50,200,870)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Amethyst: Earned 1,000,000 credits (1,034,014)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,070,774)AP 26/27 Turquoise: Earned 5,000,000 credits (5,042,439)GFN Sapphire: Earned 20,000,000 credits (23,527,862)PSA Emerald: Earned 50,000,000 credits (52,865,231)
Message 48149 - Posted: 30 Jan 2012 | 6:55:56 UTC

This is great news, but it is too bad for him that it didn't come during February...
____________

Snoopy
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Joined: 5 Jan 12
Posts: 9
ID: 125918
Credit: 6,469,906
RAC: 0
321 LLR Bronze: Earned 10,000 credits (14,418)PPS LLR Bronze: Earned 10,000 credits (28,606)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (281,010)PPS Sieve Amethyst: Earned 1,000,000 credits (1,075,349)AP 26/27 Silver: Earned 100,000 credits (141,505)GFN Ruby: Earned 2,000,000 credits (4,905,672)
Message 48160 - Posted: 30 Jan 2012 | 14:20:18 UTC

In BOINC Manager, the link to the official announcement (pdf) is not correct :)

http://www.primegrid.com/download/gc113-427194.pdf website
http://www.primegrid.com/download/gw113-427194.pdf manager
____________


Blog: http://nikolaovcharski.com/blog/

Message boards : News : World Record Generalized Cullen Prime

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