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
3176597Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
44472359825.4old
1509831390986300091857.12015-05-21 11:41:10
ECM
DigitsB1Curves
255000056 / 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
Verified2017-11-01Oliver KruseA1FF4F728BC6EE2C2292536853
Verified2017-12-12kkmrkkblmbrbkA1FF4F728BC6EE2C2236778353
History
DateUserTypeResult
2022-04-01LordJuliusNF
no factor from 2^66 to 2^67
2022-04-01LordJuliusNF
no factor from 2^64 to 2^65
2022-04-01LordJuliusNF
no factor from 2^63 to 2^64
2022-04-01LordJuliusNF
no factor from 2^62 to 2^63
2022-02-11JossNF-PM1
B1=1000000, B2=119912100
2021-09-27JossNF
no factor from 2^67 to 2^68
2021-01-17JossNF-PM1
B1=317659, B2=3176597, E=6
2021-01-08JossNF
no factor from 2^65 to 2^66
2017-12-12kkmrkkblmbrbkC-PRP
M3176597/44472359/150983139098630009 : A1FF4F728BC6EE2C
PRP: Verified
PRP without proof (not generated)
2017-11-01Oliver KruseC-PRP
M3176597/44472359/150983139098630009 : A1FF4F728BC6EE2C
PRP: Verified
PRP without proof (not generated)
2015-05-21TJAOIF
Factor: 150983139098630009 / TF: 57-58