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
671872477Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4391248575572634489592168.62018-04-03 13:34:31
History
DateUserTypeResult
2018-04-03ConductorF
Factor: 439124857557263448959 / TF: 68-69
2017-01-13NoPolarBearsHereNF
no factor from 2^67 to 2^68
2014-07-07sasakiNF
no factor from 2^66 to 2^67
2013-04-19ramgeisNF
no factor from 2^65 to 2^66