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Message boards : News : World Record Generalized Woodall Prime

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Rytis
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Joined: 22 Jun 05
Posts: 2639
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Credit: 21,321,147
RAC: 119
321 LLR Silver: Earned 100,000 credits (104,475)Cullen LLR Silver: Earned 100,000 credits (291,372)ESP LLR Bronze: Earned 10,000 credits (18,156)Generalized Cullen/Woodall LLR Bronze: Earned 10,000 credits (15,259)PPS LLR Silver: Earned 100,000 credits (113,978)PSP LLR Silver: Earned 100,000 credits (116,517)SoB LLR Silver: Earned 100,000 credits (151,232)SR5 LLR Bronze: Earned 10,000 credits (14,071)SGS LLR Silver: Earned 100,000 credits (100,082)TPS LLR (retired) Silver: Earned 100,000 credits (111,607)TRP LLR Jade: Earned 10,000,000 credits (16,017,500)Woodall LLR Silver: Earned 100,000 credits (101,463)321 Sieve Silver: Earned 100,000 credits (201,501)Cullen/Woodall Sieve (suspended) Silver: Earned 100,000 credits (214,653)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (14,200)PPS Sieve Silver: Earned 100,000 credits (302,417)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Silver: Earned 100,000 credits (200,232)TRP Sieve (suspended) Ruby: Earned 2,000,000 credits (2,453,872)AP 26/27 Silver: Earned 100,000 credits (473,058)GFN Silver: Earned 100,000 credits (163,887)PSA Bronze: Earned 10,000 credits (97,541)
Message 23672 - Posted: 9 Dec 2009 | 5:20:00 UTC

Those with triskaidekaphobia can rest at ease tonight!!! A generalized Woodall prime for base 13 has been discovered!!! The prime was found in PrimeGrid's PRPNet and is the largest known generalized Woodall prime:<br /> 563528*13563528-1 The prime is 627,745 digits long and enters Chris Caldwell's The Largest Known Primes Database ranked 1st for generalized Woodall primes and 65th overall. It is the largest non-base 2/non-generalized Fermat prime ever found. The discovery was made by Lennart Vogel (lennart SM5YMT) of Sweden using an Intel Q6600 @ 2.4 GHz with 4 GB RAM. This computer took about 3 hours and 54 minutes to complete the probable prime test. It took just over 30 hours to prove primality. For more details, please see the official announcement.

Message boards : News : World Record Generalized Woodall Prime

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