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

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Exponent Range:










MnStatusDetails
1791617Factored
FactorDigitsBitsDate
6523773079319540421432169.12014-03-10 09:21:16
ECM
DigitsB1Curves
2550000280 / 280
30250000108 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Phil Nesser6B38EBAA883A90020
Verified (Factored)1999-01-29Pjotr Wiese6B38EBAA883A90021049516
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-03Oliver Kruse7FEA5C23E8D5D04A1013
Verified2017-11-11kkmrkkblmbrbk7FEA5C23E8D5D04A1102343713
History
DateUserTypeResult
2017-11-11kkmrkkblmbrbkC-PRP
M1791617/652377307931954042143 : 7FEA5C23E8D5D04A
PRP: Verified
PRP without proof (not generated)
2017-10-03Oliver KruseC-PRP
M1791617/652377307931954042143 : 7FEA5C23E8D5D04A
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-03-10Chang Chia-TcheF-ECM
Factor: 652377307931954042143
2011-02-07Carsten KossendeyNF-PM1
B1=95000, B2=1638750, E=6
2010-11-18GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-19Architects CubedNF
no factor from 2^60 to 2^61