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
666492247Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5571120812471070264412168.92018-03-04 13:06:24
History
DateUserTypeResult
2018-03-04ConductorF
Factor: 557112081247107026441 / TF: 68-69
2017-02-17NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-05-04sasakiNF
no factor from 2^66 to 2^67
2010-03-05Architects CubedNF
no factor from 2^65 to 2^66
2010-03-05Architects CubedNF
no factor from 2^64 to 2^65