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Message boards : News : Prime found for the Riesel Problem

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JohnProject donor
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Joined: 21 Feb 06
Posts: 2876
ID: 2449
Credit: 2,681,934
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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 48573 - Posted: 3 Feb 2012 | 5:02:47 UTC
Last modified: 3 Feb 2012 | 5:05:17 UTC

On 2 Feb 2012, 21:30:55 UTC, PrimeGrid’s The Riesel Problem project eliminated k=162941 by finding the prime: 162941*2^993718-1

The prime is 299,145 digits long and will enter Chris Caldwell's The Largest Known Primes Database ranked 1536th overall. This prime was found while exploring a suspected gap in a previously searched range. This is PrimeGrid's 8th elimination. 56 k's now remain.

The discovery was made by Dmitry Domanov (unconnected) of Russia using an Intel Xeon @ 3.60GHz with 2 GB RAM running Windows Server 2003 Enterprise x86. This computer took just over 1 hour 5 minutes to complete the primality test using LLR. Dmitry is a member of Team Russia.

For more details, please see the official announcement.
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Profile Nikolay A. Saharov
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Posts: 2
ID: 97202
Credit: 8,323,273
RAC: 8,360
321 LLR Silver: Earned 100,000 credits (112,360)Cullen LLR Silver: Earned 100,000 credits (102,824)PPS LLR Silver: Earned 100,000 credits (104,482)PSP LLR Silver: Earned 100,000 credits (164,028)SoB LLR Bronze: Earned 10,000 credits (26,488)SR5 LLR Bronze: Earned 10,000 credits (78,607)SGS LLR Bronze: Earned 10,000 credits (31,616)TRP LLR Bronze: Earned 10,000 credits (74,427)Woodall LLR Silver: Earned 100,000 credits (111,810)Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (25,147)PPS Sieve Turquoise: Earned 5,000,000 credits (5,766,001)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (50,090)TRP Sieve (suspended) Silver: Earned 100,000 credits (133,252)AP 26/27 Bronze: Earned 10,000 credits (48,516)GFN Amethyst: Earned 1,000,000 credits (1,493,625)
Message 48575 - Posted: 3 Feb 2012 | 6:41:53 UTC
Last modified: 3 Feb 2012 | 6:42:38 UTC

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Message boards : News : Prime found for the Riesel Problem

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