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
2222249Factored
FactorDigitsBitsDate
17777993824.1old
12154153386536182236312270.02023-01-21 09:22:54
ECM
DigitsB1Curves
255000087 / 280
Estimated T-Level: 21.6
TF below 2^67 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-12kkmrkkblmbrbk369CDAA403CBAA3C16255553
Verified (Factored)2017-10-27Oliver Kruse369CDAA403CBAA3C157490553
Verified2023-01-23_p95holder_369CDAA403CBAA3C238434053
History
DateUserTypeResult
2023-01-23_p95holder_C-PRP
M2222249/17777993/1215415338653618223631 : 369CDAA403CBAA3C
PRP: Verified
PRP without proof (not generated)
2023-01-21_p95holder_F-ECM
Factor: 1215415338653618223631 / (ECM curve 4, B1=50000, B2=5000000)
2017-10-27Oliver KruseC-PRP
M2222249/17777993 : 369CDAA403CBAA3C
PRP: Verified
PRP without proof (not generated)
2017-10-12kkmrkkblmbrbkC-PRP
M2222249/17777993 : 369CDAA403CBAA3C
PRP: Verified
PRP without proof (not generated)
2016-05-01alpertronNF-PM1
B1=500000, B2=15000000, E=12