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
151313531Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
28758596888743935268392271.32017-07-31 20:58:23
History
DateUserTypeResult
2024-05-06GregNF
no factor from 2^68 to 2^69
2017-07-31Sergey NosovF
Factor: 2875859688874393526839 / TF: 69-72*
2016-07-20Josh FamestadNF
no factor from 2^68 to 2^69
2016-04-18johnsilverNF
no factor from 2^67 to 2^68
2015-03-26wcieslikNF
no factor from 2^66 to 2^67
2013-01-17KayJongsmaNF
no factor from 2^65 to 2^66
2011-01-15Chris SmithNF
no factor from 2^64 to 2^65
2010-06-23Mr-PlonkNF
no factor from 2^63 to 2^64