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:





MnDetails
2266717
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
276852526794125831754.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000135 / 640
Estimated T-Level: 26.1 ⓘ
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)
2017-10-11Oliver KruseCDC71160FFFE139E1013
Verified
PRP without proof (not generated)
2017-11-21storm5510CDC71160FFFE139E139072513
History
DateUserTypeResult
2017-11-21storm5510C-PRPM2266717/27685252679412583 : CDC71160FFFE139E
2017-10-11Oliver KruseC-PRPM2266717/27685252679412583 : CDC71160FFFE139E
2016-04-23alpertronNF-PM1B1=500000, B2=15000000, E=12