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
666847879Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5281205306527225671432168.82018-03-07 12:24:24
History
DateUserTypeResult
2018-03-07ConductorF
Factor: 528120530652722567143 / TF: 68-69
2017-02-14sasakiNF
no factor from 2^67 to 2^68
2014-05-17sasakiNF
no factor from 2^66 to 2^67
2010-03-12Architects CubedNF
no factor from 2^65 to 2^66
2010-03-12Architects CubedNF
no factor from 2^64 to 2^65