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
277298537Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
8405953012174094321272169.52019-08-05 02:03:10
History
DateUserTypeResult
2019-08-11ConductorF
Factor: 840595301217409432127 / TF: 69-70
2019-08-05Fan MingF
Factor: 840595301217409432127 / TF: 69-70*
2018-07-08Chabot PrimeNF
no factor from 2^68 to 2^69
2016-11-05XolotlNF
no factor from 2^67 to 2^68
2016-02-21proxy2222NF
no factor from 2^66 to 2^67
2013-12-07soldcakeNF
no factor from 2^65 to 2^66
2011-09-08sasaki3NF
no factor from 2^64 to 2^65
2010-04-04lindedNF
no factor from 2^63 to 2^64
2010-04-04lindedNF
no factor from 2^62 to 2^63