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

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Exponent Range:










MnStatusDetails
12101Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
413951009928.6old
474858427170064311755.42008-08-26 19:58:36
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001282 / 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 KruseA87E9700F6651D702013
Verified2017-10-12kkmrkkblmbrbkA87E9700F6651D7021012913
Verified2020-04-17Oliver Kruse946AEB9724F58FF6215953
Verified2023-05-19-Anonymous-946AEB9724F58FF62625853
History
DateUserTypeResult
2023-05-19-Anonymous-C-PRP
M12101/413951009/47485842717006431 : 946AEB9724F58FF6
PRP: Verified
PRP without proof (small exponent)
2023-04-06-Anonymous-NF-PM1
B1=100000000000, B2=122192573512709700
2020-04-17Oliver KruseC-PRP
M12101/413951009/47485842717006431 : 946AEB9724F58FF6
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M12101/413951009/47485842717006431 : A87E9700F6651D70
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12101/413951009/47485842717006431 : A87E9700F6651D70
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12101/413951009/47485842717006431 : A87E9700F6651D70
PRP without proof (not generated)
2016-09-08kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2008-08-26-Anonymous-F-ECM
Factor: 47485842717006431