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
4767431Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
610231169929.2old
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
Verified2017-09-20kkmrkkblmbrbk11E2B24719D967FD1013
Verified2018-03-17ATH11E2B24719D967FD1466467913
History
DateUserTypeResult
2023-10-10USAFSSNF-PM1
B1=240000, B2=91991760
2018-03-17ATHC-PRP
M4767431/610231169 : 11E2B24719D967FD
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4767431/610231169 : 11E2B24719D967FD
PRP: Verified
PRP without proof (not generated)