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
2952371Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
29110378071031.4old
19568551177691340.82008-09-30 14:38:33
140270984292311443.72008-09-30 14:38:33
ECM
DigitsB1Curves
2550000163 / 280
Estimated T-Level: 22.9
TF below 2^71 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-26Oliver KruseDED12953F51A5CA9328461353
Verified2017-12-09ATHDED12953F51A5CA93108448253
History
DateUserTypeResult
2023-02-12USAFSSNF-PM1
B1=360000, B2=298405800
2017-12-09ATHC-PRP
M2952371/2911037807/1956855117769/14027098429231 : DED12953F51A5CA9
PRP: Verified
PRP without proof (not generated)
2017-10-26Oliver KruseC-PRP
M2952371/2911037807/1956855117769/14027098429231 : DED12953F51A5CA9
PRP: Verified
PRP without proof (not generated)
2008-09-30markrF
Factor: 14027098429231
2008-09-30markrF
Factor: 1956855117769