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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2279539Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
224534591511134.4old
190690731874811444.12008-09-30 14:36:46
ECM
DigitsB1Curves
2550000280 / 280
3025000056 / 640
Estimated T-Level: 25.4
TF below 2^80 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-12kkmrkkblmbrbkE7DDD0922BC4798B251748853
Verified2017-10-29Oliver KruseE7DDD0922BC4798B21972453
History
DateUserTypeResult
2017-10-29Oliver KruseC-PRP
M2279539/22453459151/19069073187481 : E7DDD0922BC4798B
PRP: Verified
PRP without proof (not generated)
2017-10-12kkmrkkblmbrbkC-PRP
M2279539/22453459151/19069073187481 : E7DDD0922BC4798B
PRP: Verified
PRP without proof (not generated)
2016-04-09alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-09-30markrF
Factor: 19069073187481