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

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MnStatusDetails
72657631Factored
FactorDigitsBitsDate
6914828122340056991938811122520569869738125.72015-08-20 04:07:48
P-1 factors
DateFactorB1B2
2015-08-20691482812234005699193881112252056986979800000
History
DateUserTypeResult
2015-08-20Jerry HallettF-PM1
Factor: 69148281223400569919388111225205698697 / (P-1, B1=980000)
2015-08-14NickOfTimeNF
no factor from 2^74 to 2^75
2015-08-14NickOfTimeNF
no factor from 2^73 to 2^74
2015-08-14NickOfTimeNF
no factor from 2^72 to 2^73
2012-10-01AntonioKNF
no factor from 2^69 to 2^72
2010-10-17MarzbugNF
no factor from 2^68 to 2^69
2010-10-11MarzbugNF
no factor from 2^67 to 2^68
2010-10-08MarzbugNF
no factor from 2^66 to 2^67
2010-10-03MarzbugNF
no factor from 2^65 to 2^66
2010-07-30vats09NF
no factor from 2^64 to 2^65
2008-09-19Wojciech FlorekNF
no factor to 2^64