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

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MnStatusDetails
4166317Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
15129396901131340.5old
702330253415177511756.02015-02-25 12:34:31
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-11-15kkmrkkblmbrbkA5A8650DC184171C2362672753
Verified2018-01-16Oliver KruseA5A8650DC184171C2347050753
History
DateUserTypeResult
2022-11-14USAFSSNF-PM1
B1=200000, B2=108185220
2018-01-16Oliver KruseC-PRP
M4166317/1512939690113/70233025341517751 : A5A8650DC184171C
PRP: Verified
PRP without proof (not generated)
2017-11-15kkmrkkblmbrbkC-PRP
M4166317/1512939690113/70233025341517751 : A5A8650DC184171C
PRP: Verified
PRP without proof (not generated)
2015-02-25TJAOIF
Factor: 70233025341517751 / TF: 55-56