Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
255778813Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
208618300552864185206172374.12023-02-11 04:53:41
History
DateUserTypeResult
2023-02-11Smok_bmv F
Factor: 20861830055286418520617 / TF: 74-75*
2022-02-11SRBaseNF
no factor from 2^73 to 2^74
2020-11-22SRBaseNF
no factor from 2^72 to 2^73
2020-06-30SRBaseNF
no factor from 2^71 to 2^72
2020-05-08SRBaseNF
no factor from 2^70 to 2^71
2019-04-28ANONYMOUSNF
no factor from 2^69 to 2^70
2019-04-24YxinityNF
no factor from 2^69 to 2^70
2018-06-10Niels_Mache_NextcloudNF
no factor from 2^68 to 2^69
2015-10-03caddrNF
no factor from 2^66 to 2^68
2013-11-13haphaeuNF
no factor from 2^65 to 2^66
2011-08-03oodairaNF
no factor from 2^64 to 2^65
2010-03-08Architects CubedNF
no factor from 2^63 to 2^64
2010-03-08Architects CubedNF
no factor from 2^62 to 2^63