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:










MnStatusDetails
2458199Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1906752472847277671857.4old
ECM
DigitsB1Curves
2550000190 / 280
Estimated T-Level: 23.4
TF below 2^73 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-13Oliver KruseFE7C8FB877F4E3B5131009153
Verified2017-11-28kkmrkkblmbrbkFE7C8FB877F4E3B5146186753
History
DateUserTypeResult
2018-09-28alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-28kkmrkkblmbrbkC-PRP
M2458199/190675247284727767 : FE7C8FB877F4E3B5
PRP: Verified
PRP without proof (not generated)
2017-10-13Oliver KruseC-PRP
M2458199/190675247284727767 : FE7C8FB877F4E3B5
PRP: Verified
PRP without proof (not generated)