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
2346847Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
42243247825.3old
ECM
DigitsB1Curves
2550000206 / 280
Estimated T-Level: 23.7
TF below 2^74 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-12Oliver Kruse1CA473C423D0EC261013
Verified2017-11-24kkmrkkblmbrbk1CA473C423D0EC2615027113
History
DateUserTypeResult
2018-03-18alpertronNF-PM1
B1=500000, B2=15000000, E=12
2017-11-24kkmrkkblmbrbkC-PRP
M2346847/42243247 : 1CA473C423D0EC26
PRP: Verified
PRP without proof (not generated)
2017-10-12Oliver KruseC-PRP
M2346847/42243247 : 1CA473C423D0EC26
PRP: Verified
PRP without proof (not generated)