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
121465957Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
47296330877845510702632272.02020-12-26 15:21:12
History
DateUserTypeResult
2020-12-26Ruslan BorisovF
Factor: 4729633087784551070263 / TF: 72-73
2015-11-29workerthreadNF
no factor from 2^71 to 2^72
2015-11-20workerthreadNF
no factor from 2^70 to 2^71
2013-12-10GrunwalderGIMPNF
no factor from 2^69 to 2^70
2013-12-10GrunwalderGIMPNF
no factor from 2^68 to 2^69
2013-12-10GrunwalderGIMPNF
no factor from 2^66 to 2^68
2012-08-12sasaki3NF
no factor from 2^65 to 2^66
2010-10-23RichardNF
no factor from 2^64 to 2^65
2010-05-18jonthomsonNF
no factor from 2^63 to 2^64