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
248361389Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
4217756508919724728312168.52018-06-05 15:58:39
History
DateUserTypeResult
2018-06-05YxinityF
Factor: 421775650891972472831 / TF: 68-69
2016-10-20Mikhail E. GolosovNF
no factor from 2^67 to 2^68
2016-02-20proxy2222NF
no factor from 2^66 to 2^67
2013-11-05Yan Ruimin ChinaNF
no factor from 2^65 to 2^66
2011-07-24greg3llNF
no factor from 2^64 to 2^65