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
7591Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1897751720.9old
1152929521877619131856.7old
2358262863456719211857.7old
6751504780212274512580013341677183685738125.72017-03-12 12:32:39
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002050 / 9201
Estimated T-Level: 41.1
TF below 2^132 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse1FA0CA1B25D8A3604013
Verified2017-10-02kkmrkkblmbrbk1FA0CA1B25D8A3604013
Verified2017-12-07ATH1FA0CA1B25D8A3604532413
Verified2020-04-17Oliver Kruse902ECB7E331823694418953
Verified2024-02-03Wentao Huang902ECB7E331823694687353
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M7591/1897751/115292952187761913/235826286345671921/67515047802122745125800133416771836857 : 902ECB7E33182369
PRP: Verified
PRP without proof (small exponent)
2021-07-07ViliamFNF-PM1
B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRP
M7591/1897751/115292952187761913/235826286345671921/67515047802122745125800133416771836857 : 902ECB7E33182369
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M7591/1897751/115292952187761913/235826286345671921/67515047802122745125800133416771836857 : 1FA0CA1B25D8A360
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M7591/1897751/115292952187761913/235826286345671921/67515047802122745125800133416771836857 : 1FA0CA1B25D8A360
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M7591/known_factors : 1FA0CA1B25D8A360
PRP without proof (not generated)
2017-03-12kkmrkkblmbrbkF-ECM
Factor: 67515047802122745125800133416771836857 / (ECM curve 1583, B1=3000000, B2=300000000)