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
665887451Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
5617838040071614854472168.92018-03-04 21:40:37
History
DateUserTypeResult
2018-03-04ConductorF
Factor: 561783804007161485447 / TF: 68-69
2016-03-20america64NF
no factor from 2^67 to 2^68
2014-04-28sasakiNF
no factor from 2^66 to 2^67
2011-11-06laleraNF
no factor from 2^65 to 2^66
2011-06-29laleraNF
no factor from 2^64 to 2^65
2010-06-13Architects CubedNF
no factor from 2^63 to 2^64