Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
661282147Factored
FactorDigitsBitsDate
4317111283249717528572168.52018-02-14 16:56:28
History
DateUserTypeResult
2018-02-14ConductorF
Factor: 431711128324971752857 / TF: 68-69
2017-02-01sasakiNF
no factor from 2^67 to 2^68
2014-03-29sasakiNF
no factor from 2^66 to 2^67
2013-12-16sasakiNF
no factor from 2^65 to 2^66
2012-01-23Alben WeeksNF
no factor from 2^64 to 2^65
2010-06-12Architects CubedNF
no factor from 2^63 to 2^64