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
10631Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
531551619.0old
319469204331134.92008-08-26 19:58:32
91109513479849374411963.02008-08-29 02:24:26
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001320 / 9201
Estimated T-Level: 40.7 ⓘ
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-21Oliver Kruse50DE88BBE824C3C53013
Verified2017-10-12kkmrkkblmbrbk50DE88BBE824C3C53586913
Verified2020-04-17Oliver Kruse21B0DA83B7E9EF7631005353
Verified2024-07-01kkmrkkblmbrbk21B0DA83B7E9EF763605253
P-1 factors
DateFactorB1B2
2022-11-099110951347984937441100000000000120443211520241616
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M10631/31946920433/531551/9110951347984937441 : 21B0DA83B7E9EF76
PRP: Verified
PRP without proof (small exponent)
2022-11-09Anton RepkoF-PM1
Factor: 9110951347984937441 / (P-1, B1=100000000000, B2=120443211520241610)
2021-08-02ViliamFNF-PM1
B1=250000000, B2=40250000000
2020-04-17Oliver KruseC-PRP
M10631/531551/31946920433/9110951347984937441 : 21B0DA83B7E9EF76
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M10631/531551/31946920433/9110951347984937441 : 50DE88BBE824C3C5
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M10631/531551/31946920433/9110951347984937441 : 50DE88BBE824C3C5
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M10631/531551/31946920433/9110951347984937441 : 50DE88BBE824C3C5
PRP without proof (not generated)
2016-09-07kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2008-08-29-Anonymous-F-ECM
Factor: 9110951347984937441
2008-08-26-Anonymous-F
Factor: 31946920433