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

PrimeNet Exponent Status

Exponent Range:





MnDetails
2268139
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
77116727826.2old
515672470168331445.62012-07-09 05:45:31
ECM
DigitsB1Curves
2550000280 / 280
30250000161 / 640
Estimated T-Level: 26.3 ⓘ
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-10Oliver Kruse9A11A7558C557F1E2013
Verified
PRP without proof (not generated)
2017-11-21storm55109A11A7558C557F1E28604113
History
DateUserTypeResult
2017-11-21storm5510C-PRP
M2268139/77116727/51567247016833 : 9A11A7558C557F1E
2017-10-10Oliver KruseC-PRPM2268139/77116727/51567247016833 : 9A11A7558C557F1E
2016-04-24alpertronNF-PM1B1=500000, B2=15000000, E=12
2012-07-09dbaughFFactor: 51567247016833