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
277347481Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
3858775940637607784812168.42018-07-09 21:12:44
History
DateUserTypeResult
2025-03-10James HeinrichF
Factor: 385877594063760778481 / TF: 68-70
2018-07-09NickF
Factor: 385877594063760778481 / TF: 68-69
2016-11-05Mikhail E. GolosovNF
no factor from 2^67 to 2^68
2016-01-14mikeblasNF
no factor from 2^66 to 2^67
2013-12-07arnaudNF
no factor from 2^65 to 2^66
2011-11-10RichardNF
no factor from 2^64 to 2^65
2010-04-04Torchwood InstituteNF
no factor from 2^63 to 2^64
2010-04-04Torchwood InstituteNF
no factor from 2^62 to 2^63