Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
11731Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
339491386091135.0old
2884366663611238.12008-08-26 19:58:35
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001297 / 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 Kruse0BAAEFB85DBE52502013
Verified2017-10-12kkmrkkblmbrbk0BAAEFB85DBE52502962113
Verified2020-04-17Oliver Kruse4B92A0F41C9897912402953
Verified2024-07-01kkmrkkblmbrbk4B92A0F41C9897912713653
History
DateUserTypeResult
2024-07-01kkmrkkblmbrbkC-PRP
M11731/288436666361/33949138609 : 4B92A0F41C989791
PRP: Verified
PRP without proof (small exponent)
2023-01-20-Anonymous-NF-PM1
B1=100000000000, B2=122192573512709700
2020-04-17Oliver KruseC-PRP
M11731/33949138609/288436666361 : 4B92A0F41C989791
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M11731/33949138609/288436666361 : 0BAAEFB85DBE5250
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11731/33949138609/288436666361 : 0BAAEFB85DBE5250
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M11731/33949138609/288436666361 : 0BAAEFB85DBE5250
PRP without proof (not generated)
2016-09-07kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2008-08-26-Anonymous-F
Factor: 288436666361