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
2176033Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
2446128961662311547.8old
36129062144857511651.72014-07-07 11:50:04
ECM
DigitsB1Curves
2550000280 / 280
30250000163 / 640
Estimated T-Level: 26.3
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-10kkmrkkblmbrbkD8FE81EB00AD2A0B2013
Verified2017-10-23Oliver KruseD8FE81EB00AD2A0B2185580313
History
DateUserTypeResult
2017-10-23Oliver KruseC-PRP
M2176033/244612896166231/3612906214485751 : D8FE81EB00AD2A0B
PRP: Verified
PRP without proof (not generated)
2017-10-10kkmrkkblmbrbkC-PRP
M2176033/244612896166231/3612906214485751 : D8FE81EB00AD2A0B
PRP: Verified
PRP without proof (not generated)
2016-03-15alpertronNF-PM1
B1=500000, B2=15000000, E=12
2014-07-07TJAOIF
Factor: 3612906214485751