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
238358993Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
6435562151595705795832169.12018-05-17 17:23:41
History
DateUserTypeResult
2018-05-17YxinityF
Factor: 643556215159570579583 / TF: 69-70
2018-05-17YxinityNF
no factor from 2^68 to 2^69
2018-05-16SummyNF
no factor from 2^68 to 2^69
2016-10-08KishNF
no factor from 2^67 to 2^68
2015-11-27sasakiNF
no factor from 2^66 to 2^67
2013-10-18Yan Ruimin ChinaNF
no factor from 2^65 to 2^66
2011-07-05Dalos LeeNF
no factor from 2^64 to 2^65