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
2999299Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
263938313928.0old
362375305191135.12008-09-07 19:43:23
ECM
DigitsB1Curves
255000055 / 280
Estimated T-Level: 21.0
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-27Oliver KruseA966BABEC963E5B42115492853
Verified2017-12-10kkmrkkblmbrbkA966BABEC963E5B4217553653
History
DateUserTypeResult
2023-03-01USAFSSNF-PM1
B1=360000, B2=249019650
2022-01-13JossNF
no factor from 2^67 to 2^68
2017-12-10kkmrkkblmbrbkC-PRP
M2999299/263938313/36237530519 : A966BABEC963E5B4
PRP: Verified
PRP without proof (not generated)
2017-10-27Oliver KruseC-PRP
M2999299/263938313/36237530519 : A966BABEC963E5B4
PRP: Verified
PRP without proof (not generated)
2008-09-07Will EdgingtonF
Factor: 36237530519