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
663449933Factored
FactorDigitsBitsDate
4286405749699496172792168.52018-02-26 15:11:06
History
DateUserTypeResult
2018-02-26ConductorF
Factor: 428640574969949617279 / TF: 68-69
2017-02-07sasakiNF
no factor from 2^67 to 2^68
2014-04-25sasakiNF
no factor from 2^66 to 2^67
2013-12-22sasakiNF
no factor from 2^65 to 2^66
2011-10-26laleraNF
no factor from 2^64 to 2^65
2010-06-10Architects CubedNF
no factor from 2^63 to 2^64