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
888091583Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
42428765713470973906732271.82019-02-25 11:50:53
History
DateUserTypeResult
2025-03-23James HeinrichF
Factor: 4242876571347097390673 / TF: 71-72
2019-02-25Smok_bmv F
Factor: 4242876571347097390673 / TF: 71-72*
2019-02-25Smok_bmv NF
no factor from 2^70 to 2^71
2017-01-11ramgeisNF
no factor from 2^68 to 2^70
2015-09-26sasakiNF
no factor from 2^67 to 2^68
2015-04-11sasakiNF
no factor from 2^66 to 2^67
2013-08-08america64NF
no factor from 2^65 to 2^66
2010-09-18Architects CubedNF
no factor from 2^64 to 2^65