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
3347413Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
67775204907531342.6old
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
Verified2017-11-04kkmrkkblmbrbkB7B8A387FC130C5A1246636953
Verified2017-11-20Oliver KruseB7B8A387FC130C5A158581253
History
DateUserTypeResult
2022-09-06JossNF-PM1
B1=1115804, B2=226749600
2022-01-09JossNF-PM1
B1=1115804, B2=119912100
2021-05-14JossNF
no factor from 2^67 to 2^68
2021-03-09JossNF-PM1
B1=334741, B2=3682154, E=6
2017-11-20Oliver KruseC-PRP
M3347413/6777520490753 : B7B8A387FC130C5A
PRP: Verified
PRP without proof (not generated)
2017-11-04kkmrkkblmbrbkC-PRP
M3347413/6777520490753 : B7B8A387FC130C5A
PRP: Verified
PRP without proof (not generated)