Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
2350057Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
569784808977191445.7old
3328378897014289611858.22015-08-18 11:27:46
ECM
DigitsB1Curves
2550000184 / 280
Estimated T-Level: 23.3
TF below 2^72 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-12Oliver Kruse561497B3818AD5EA2013
Verified2017-11-24storm5510561497B3818AD5EA2146670113
History
DateUserTypeResult
2018-04-27alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-24storm5510C-PRP
M2350057/56978480897719/332837889701428961 : 561497B3818AD5EA
PRP: Verified
PRP without proof (not generated)
2017-10-12Oliver KruseC-PRP
M2350057/56978480897719/332837889701428961 : 561497B3818AD5EA
PRP: Verified
PRP without proof (not generated)
2015-08-18TJAOIF
Factor: 332837889701428961 / TF: 58-59