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
666996157Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4063926066891956702892168.52018-03-07 21:57:54
History
DateUserTypeResult
2018-03-07ConductorF
Factor: 406392606689195670289 / TF: 68-69
2017-02-16sasakiNF
no factor from 2^67 to 2^68
2017-02-15NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-05-16sasakiNF
no factor from 2^66 to 2^67
2010-03-13Architects CubedNF
no factor from 2^65 to 2^66
2010-03-13Architects CubedNF
no factor from 2^64 to 2^65