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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MnStatusDetails
3249137Factored
FactorDigitsBitsDate
16908213406498491650.6old
555421124998162563676812375.62018-09-21 00:27:08
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-11-02Oliver KruseEA5495572124AADF1324877553
Verified (Factored)2017-12-13kkmrkkblmbrbkEA5495572124AADF15771553
Verified2018-10-20J.R. AllenEA5495572124AADF2226361253
History
DateUserTypeResult
2022-09-07JossNF-PM1
B1=1074912, B2=223284600
2022-01-08JossNF-PM1
B1=1074912, B2=116447100
2021-10-02JossNF
no factor from 2^67 to 2^68
2021-01-15JossNF-PM1
B1=324913, B2=3249137, E=6
2020-12-25JossNF-PM1
B1=108304
2018-10-20J.R. AllenC-PRP
M3249137/1690821340649849/55542112499816256367681 : EA5495572124AADF
PRP: Verified
PRP without proof (not generated)
2018-09-21ATHF-ECM
Factor: 55542112499816256367681 / (ECM curve 3, B1=50000, B2=5000000)
2017-12-13kkmrkkblmbrbkC-PRP
M3249137/1690821340649849 : EA5495572124AADF
PRP: Verified
PRP without proof (not generated)
2017-11-02Oliver KruseC-PRP
M3249137/1690821340649849 : EA5495572124AADF
PRP: Verified
PRP without proof (not generated)