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
281108183Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
25541234841879986932392271.12019-11-13 17:05:20
History
DateUserTypeResult
2025-04-27James HeinrichF
Factor: 2554123484187998693239 / TF: 71-72
2019-11-13Smok_bmv F
Factor: 2554123484187998693239 / TF: 71-72*
2019-11-13Smok_bmv NF
no factor from 2^70 to 2^71
2019-07-19Chabot PrimeNF
no factor from 2^69 to 2^70
2018-07-12Chabot PrimeNF
no factor from 2^68 to 2^69
2016-11-11scotty24NF
no factor from 2^67 to 2^68
2016-01-20rocksta308NF
no factor from 2^66 to 2^67
2013-12-11tscNF
no factor from 2^65 to 2^66
2011-09-15ALSNF
no factor from 2^64 to 2^65
2010-04-20James HintzNF
no factor from 2^63 to 2^64
2010-04-20James HintzNF
no factor from 2^62 to 2^63