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
665494771Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3985119497116813972332168.42018-03-03 07:31:57
History
DateUserTypeResult
2018-03-03ConductorF
Factor: 398511949711681397233 / TF: 68-69
2016-03-19america64NF
no factor from 2^67 to 2^68
2014-05-05sasakiNF
no factor from 2^66 to 2^67
2011-11-03laleraNF
no factor from 2^65 to 2^66
2011-06-17laleraNF
no factor from 2^64 to 2^65
2010-06-22Architects CubedNF
no factor from 2^63 to 2^64