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
4681309Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
112351417926.7old
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
Verified2017-09-20kkmrkkblmbrbk222594CDCB7B77F71013
Verified2018-03-08Oliver Kruse222594CDCB7B77F71342742113
History
DateUserTypeResult
2023-08-31USAFSSNF-PM1
B1=240000, B2=91991760
2018-03-08Oliver KruseC-PRP
M4681309/112351417 : 222594CDCB7B77F7
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4681309/112351417 : 222594CDCB7B77F7
PRP: Verified
PRP without proof (not generated)