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
3279559Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
204972437511134.3old
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-11-03Oliver KruseF093B0C2DEEBEDCE1100275953
Verified2017-12-15kkmrkkblmbrbkF093B0C2DEEBEDCE1211528153
History
DateUserTypeResult
2022-02-18JossNF-PM1
B1=1000000, B2=128282700
2021-05-21JossNF
no factor from 2^67 to 2^68
2021-01-03JossNF-PM1
B1=327955, B2=3279559, E=6
2017-12-15kkmrkkblmbrbkC-PRP
M3279559/20497243751 : F093B0C2DEEBEDCE
PRP: Verified
PRP without proof (not generated)
2017-11-03Oliver KruseC-PRP
M3279559/20497243751 : F093B0C2DEEBEDCE
PRP: Verified
PRP without proof (not generated)