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
556897259Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
8381914908709881755832169.52018-05-26 04:17:40
History
DateUserTypeResult
2018-05-28sasakiNF
no factor from 2^68 to 2^69
2018-05-26YxinityF
Factor: 838191490870988175583 / TF: 68-70
2016-11-15sasakiNF
no factor from 2^67 to 2^68
2015-12-14sasakiNF
no factor from 2^66 to 2^67
2014-10-15sasakiNF
no factor from 2^65 to 2^66
2011-12-15Architects CubedNF
no factor from 2^64 to 2^65