Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
71908231Factored
FactorDigitsBitsDate
39904257804424963423129932581.72015-05-31 20:40:25
P-1 factors
DateFactorB1B2
2015-05-31399042578044249634231299370500015333750
History
DateUserTypeResult
2015-05-31TheJudgerF-PM1
Factor: 3990425780442496342312993 / (P-1, B1=705000, B2=15333750, E=6)
2015-05-10el groccoNF
no factor from 2^72 to 2^73
2015-02-07RichD0NF
no factor from 2^71 to 2^72
2012-12-01-Anonymous-NF
no factor from 2^70 to 2^71
2012-07-09tscNF
no factor to 2^70
2010-05-17eon_blue_apocalypseNF
no factor from 2^68 to 2^69
2010-05-14eon_blue_apocalypseNF
no factor from 2^67 to 2^68
2010-05-11eon_blue_apocalypseNF
no factor from 2^66 to 2^67
2010-05-09duklaNF
no factor from 2^65 to 2^66
2010-05-06Helmut ZulusNF
no factor from 2^64 to 2^65
2008-10-03-Anonymous-NF
no factor to 2^64