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

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MnStatusDetails
4321717Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
2095945986730959547296172477.52009-12-18 06:05:57
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David A McGough3A5FED1B881B7A5D0
Verified (Factored)2001-02-25Thomas Christensen3A5FED1B881B7A5D789315
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbkF909C1FD77E2A00C1013
Verified2018-01-31Oliver KruseF909C1FD77E2A00C1139247413
History
DateUserTypeResult
2023-03-11USAFSSNF-PM1
B1=224000, B2=114813270
2018-01-31Oliver KruseC-PRP
M4321717/209594598673095954729617 : F909C1FD77E2A00C
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4321717/209594598673095954729617 : F909C1FD77E2A00C
PRP: Verified
PRP without proof (not generated)
2009-12-18Martti JärviF-ECM
Factor: 209594598673095954729617
2009-07-29Carsten KossendeyNF-PM1
B1=25000, B2=343750