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
25739983Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
121330478858987093643712546487188134109.92021-10-30 13:21:40
LL
StatusDateUserResidueShift
Verified (Factored)2005-04-02Ars Technica Team Prime Rib0D2247961EED7B8E18013871
Verified (Factored)2011-10-04kallsop0D2247961EED7B8E10902050
P-1 factors
DateFactorB1B2
2021-10-30121330478858987093643712546487188191200047717000
History
DateUserTypeResult
2021-10-30RichD0F-PM1
Factor: 1213304788589870936437125464871881 / (P-1, B1=912000, B2=47717000)
2021-10-17TheJudgerNF
no factor from 2^74 to 2^75
2021-09-19TheJudgerNF
no factor from 2^73 to 2^74
2021-08-28TheJudgerNF
no factor from 2^72 to 2^73
2021-08-28TheJudgerNF
no factor from 2^71 to 2^72
2021-07-08mikrNF
no factor from 2^70 to 2^71
2017-05-31ramgeisNF
no factor from 2^69 to 2^70
2017-05-31ramgeisNF
no factor from 2^68 to 2^69
2016-02-08VictordeHollanderNF
no factor from 2^67 to 2^68
2011-10-04kallsopC-LL
0D2247961EED7B8E