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
665425997Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4058208867322919339532168.52018-03-02 17:04:51
History
DateUserTypeResult
2018-03-02ConductorF
Factor: 405820886732291933953 / TF: 68-69
2016-03-16america64NF
no factor from 2^67 to 2^68
2014-05-01sasakiNF
no factor from 2^66 to 2^67
2011-11-02laleraNF
no factor from 2^65 to 2^66
2011-06-17laleraNF
no factor from 2^64 to 2^65
2010-06-23Architects CubedNF
no factor from 2^63 to 2^64