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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
4371673Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
285726864105111444.7old
1103514748184711546.62008-09-07 23:40:30
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbk08D0F0539A2D80942013
Verified2018-02-04trebor08D0F0539A2D80942396045513
History
DateUserTypeResult
2023-05-04USAFSSNF-PM1
B1=448000, B2=251346810
2018-02-04treborC-PRP
M4371673/28572686410511/110351474818471 : 08D0F0539A2D8094
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4371673/110351474818471/28572686410511 : 08D0F0539A2D8094
PRP: Verified
PRP without proof (not generated)
2008-09-07Will EdgingtonF
Factor: 110351474818471