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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2060141Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
407907919928.6old
741650761929.52008-07-15 07:49:53
218820389687031444.32008-08-26 20:20:36
ECM
DigitsB1Curves
2550000280 / 280
30250000185 / 640
Estimated T-Level: 26.4
TF below 2^83 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-06Oliver Kruse69D5D36290EAC1A23013
Verified2017-11-15kkmrkkblmbrbk69D5D36290EAC1A2381377313
History
DateUserTypeResult
2017-11-15kkmrkkblmbrbkC-PRP
M2060141/407907919/741650761/21882038968703 : 69D5D36290EAC1A2
PRP: Verified
PRP without proof (not generated)
2017-10-06Oliver KruseC-PRP
M2060141/407907919/741650761/21882038968703 : 69D5D36290EAC1A2
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-08-26-Anonymous-F
Factor: 21882038968703
2008-07-15J FeitsmaF
Factor: 741650761