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
154031597Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3893871982721130975612168.42016-12-26 18:03:36
History
DateUserTypeResult
2016-12-26ConductorF
Factor: 389387198272113097561 / TF: 68-69
2016-05-02Jan KuipersNF
no factor from 2^67 to 2^68
2015-04-05tscNF
no factor from 2^66 to 2^67
2013-02-03RichardNF
no factor from 2^65 to 2^66
2011-02-06runeskNF
no factor from 2^64 to 2^65
2010-06-25Torchwood InstituteNF
no factor from 2^63 to 2^64