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
2277809
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 262
Factored
FactorDigitsBitsDate
4881487141174871548.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000121 / 640
Estimated T-Level: 25.9 ⓘ
TF below 2^81 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 Kruse3E1C0B20745115E41013
Verified
PRP without proof (not generated)
2017-11-21storm55103E1C0B20745115E41201423913
History
DateUserTypeResult
2017-11-21storm5510C-PRPM2277809/488148714117487 : 3E1C0B20745115E4
2017-10-11Oliver KruseC-PRPM2277809/488148714117487 : 3E1C0B20745115E4
2016-04-07alpertronNF-PM1B1=500000, B2=15000000, E=12