Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
12959Composite, with 5 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
25919514.7old
570507017929.12008-08-26 19:58:39
636649753929.22008-08-26 19:58:39
1633059529961073191857.22008-08-26 19:58:39
94757011268323004711963.02008-08-26 19:58:39
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001389 / 9201
Estimated T-Level: 40.8
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 KruseB205776537C9C3CD5013
Verified2017-10-02kkmrkkblmbrbkB205776537C9C3CD5013
Verified2017-12-07ATHB205776537C9C3CD5592413
Verified2020-04-17Oliver Kruse44D900E5E5A0FC9451140853
Verified (Factored)2022-05-12Jorge Coveiro44D900E5E5A0FC941282253
Verified2024-07-01kkmrkkblmbrbk44D900E5E5A0FC945853953
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M12959/163305952996107319/25919/570507017/636649753/9475701126832300471 : 44D900E5E5A0FC94
PRP: Verified
PRP without proof (small exponent)
2023-10-10Anton RepkoNF-PM1
B1=100000000000, B2=122154521813133810
2023-05-16JacobZNF-PM1
B1=8500000000, B2=33523232658715800
2022-05-12Jorge CoveiroC-PRP
M12959/25919 : 44D900E5E5A0FC94
PRP: Verified
PRP without proof (small exponent)
2021-08-27Seth_TrNF-PM1
B1=400000000
2020-04-17Oliver KruseC-PRP
M12959/25919/570507017/636649753/163305952996107319/9475701126832300471 : 44D900E5E5A0FC94
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M12959/25919/570507017/636649753/163305952996107319/9475701126832300471 : B205776537C9C3CD
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M12959/25919/570507017/636649753/163305952996107319/9475701126832300471 : B205776537C9C3CD
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12959/25919/570507017/636649753/163305952996107319/9475701126832300471 : B205776537C9C3CD
PRP without proof (not generated)
2008-08-26-Anonymous-F-ECM
Factor: 9475701126832300471
2008-08-26-Anonymous-F-ECM
Factor: 163305952996107319
2008-08-26-Anonymous-F
Factor: 636649753
2008-08-26-Anonymous-F
Factor: 570507017