Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
895000247Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
52557395619225421002232272.22020-02-29 18:55:26
History
DateUserTypeResult
2024-06-08James HeinrichNF
no factor from 2^70 to 2^71
2020-02-29mikrF
Factor: 5255739561922542100223 / TF: 72-73*
2020-02-29mikrNF
no factor from 2^71 to 2^72
2017-01-12ConductorNF
no factor from 2^70 to 2^71
2016-09-14ramgeisNF
no factor from 2^68 to 2^70
2015-05-27sasakiNF
no factor from 2^67 to 2^68
2015-04-24sasakiNF
no factor from 2^66 to 2^67
2010-10-02Maurizio FD - ItalyNF
no factor from 2^65 to 2^66
2010-09-26HBendtzNF
no factor from 2^64 to 2^65
2010-04-17Architects CubedNF
no factor from 2^63 to 2^64