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
277894909Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
18813254890055761351612270.72019-10-23 06:03:54
History
DateUserTypeResult
2019-10-23ConductorF
Factor: 1881325489005576135161 / TF: 70-71
2019-09-16proxy2222NF
no factor from 2^69 to 2^70
2018-07-09Chabot PrimeNF
no factor from 2^68 to 2^69
2016-11-07el groccoNF
no factor from 2^67 to 2^68
2016-01-14mgs9NF
no factor from 2^66 to 2^67
2013-12-08GrunwalderGIMPNF
no factor from 2^65 to 2^66
2011-09-09sasaki3NF
no factor from 2^64 to 2^65
2010-04-04Torchwood InstituteNF
no factor from 2^63 to 2^64
2010-04-04Torchwood InstituteNF
no factor from 2^62 to 2^63