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
3132601Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
720620464091031446.0old
ECM
DigitsB1Curves
255000069 / 280
Estimated T-Level: 21.2
TF below 2^66 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-30Oliver Kruse99D03441EE553D9D1168299153
Verified2017-12-12kkmrkkblmbrbk99D03441EE553D9D1290514753
History
DateUserTypeResult
2022-03-20LordJuliusNF
no factor from 2^66 to 2^67
2022-03-20LordJuliusNF
no factor from 2^65 to 2^66
2022-02-20JossNF-PM1
B1=1000000, B2=128282700
2021-06-06JossNF
no factor from 2^67 to 2^68
2021-01-11JossNF
no factor from 2^64 to 2^65
2021-01-07JossNF
no factor from 2^63 to 2^64
2021-01-06JossNF
no factor from 2^62 to 2^63
2021-01-04JossNF
no factor from 2^61 to 2^62
2021-01-04JossNF
no factor from 2^60 to 2^61
2020-12-31JossNF-PM1
B1=313260, B2=3132601, E=6
2017-12-12kkmrkkblmbrbkC-PRP
M3132601/72062046409103 : 99D03441EE553D9D
PRP: Verified
PRP without proof (not generated)
2017-10-30Oliver KruseC-PRP
M3132601/72062046409103 : 99D03441EE553D9D
PRP: Verified
PRP without proof (not generated)