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
12037Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
72223516.1old
2022217720.92008-08-26 19:58:36
9182123398105427185696332479.62008-08-29 02:24:28
10423375087890580894098109012895272869326342136.32014-09-07 10:10:12
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001353 / 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 Kruse3526C26D12B8AC2E4013
Verified2017-10-02kkmrkkblmbrbk3526C26D12B8AC2E4013
Verified2017-12-07ATH3526C26D12B8AC2E4868813
Verified2020-04-17Oliver Kruse54FA4481D1E0E39B4405353
Verified2023-05-19-Anonymous-54FA4481D1E0E39B4963353
P-1 factors
DateFactorB1B2
2023-04-0695708716281749316392483547181490763678075629294136710012563482479100000000000122192573512709696
History
DateUserTypeResult
2023-05-19-Anonymous-C-PRP
M12037/72223/2022217/918212339810542718569633/104233750878905808940981090128952728693263 : 54FA4481D1E0E39B
PRP: Verified
PRP without proof (small exponent)
2023-04-06-Anonymous-F-PM1
Factors: 104233750878905808940981090128952728693263,918212339810542718569633 / (P-1, B1=100000000000, B2=122192573512709700)
2022-02-25KinaNF-PP1
Start=2/7, B1=130000000, B2=10530000000
2020-04-17Oliver KruseC-PRP
M12037/72223/2022217/918212339810542718569633/104233750878905808940981090128952728693263 : 54FA4481D1E0E39B
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M12037/72223/2022217/918212339810542718569633/104233750878905808940981090128952728693263 : 3526C26D12B8AC2E
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M12037/72223/2022217/918212339810542718569633/104233750878905808940981090128952728693263 : 3526C26D12B8AC2E
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12037/72223/2022217/918212339810542718569633/104233750878905808940981090128952728693263 : 3526C26D12B8AC2E
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12037/72223/2022217/918212339810542718569633/104233750878905808940981090128952728693263 : 3526C26D12B8AC2E
PRP without proof (not generated)
2016-09-08kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2014-09-07BloodIceF-ECM
Factor: 104233750878905808940981090128952728693263
2008-08-29-Anonymous-F-ECM
Factor: 918212339810542718569633
2008-08-26-Anonymous-F
Factor: 2022217