Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

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MnStatusDetails
2586061Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1204955266915035911856.7old
ECM
DigitsB1Curves
2550000170 / 280
Estimated T-Level: 23.0
TF below 2^72 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-15Oliver Kruse2F3F53E55D51C9E21216405353
Verified2017-12-02kkmrkkblmbrbk2F3F53E55D51C9E21243723953
History
DateUserTypeResult
2019-07-04alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-12-02kkmrkkblmbrbkC-PRP
M2586061/120495526691503591 : 2F3F53E55D51C9E2
PRP: Verified
PRP without proof (not generated)
2017-10-15Oliver KruseC-PRP
M2586061/120495526691503591 : 2F3F53E55D51C9E2
PRP: Verified
PRP without proof (not generated)