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
2001977Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
31732096201271341.5old
34933033523152331651.62014-07-06 11:50:34
ECM
DigitsB1Curves
2550000280 / 280
30250000162 / 640
Estimated T-Level: 26.3
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-05Oliver Kruse99F86A80AF9A83CA2013
Verified2017-11-13kkmrkkblmbrbk99F86A80AF9A83CA2181412513
History
DateUserTypeResult
2017-11-13kkmrkkblmbrbkC-PRP
M2001977/3173209620127/3493303352315233 : 99F86A80AF9A83CA
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M2001977/3173209620127/3493303352315233 : 99F86A80AF9A83CA
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-07-06TJAOIF
Factor: 3493303352315233