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

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MnStatusDetails
4566301Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
3286934420914311548.2old
3646220481500391548.42008-09-07 23:42:03
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
Verified2017-11-17ATH148FFC7367B9F6672165062053
Verified2018-01-03kkmrkkblmbrbk148FFC7367B9F6672273857053
History
DateUserTypeResult
2023-04-08USAFSSNF-PM1
B1=240000, B2=122927910
2018-01-03kkmrkkblmbrbkC-PRP
M4566301/328693442091431/364622048150039 : 148FFC7367B9F667
PRP: Verified
PRP without proof (not generated)
2017-11-17ATHC-PRP
M4566301/328693442091431/364622048150039 : 148FFC7367B9F667
PRP: Verified
PRP without proof (not generated)
2008-09-07Will EdgingtonF
Factor: 364622048150039