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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MnDetails
2494721
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
229065282231134.4old
17109545034311340.62008-07-14 20:24:20
ECM
DigitsB1Curves
2550000192 / 280
Estimated T-Level: 23.4
TF below 2^73 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-10-14Oliver KruseCDCC2CFC46036DB6247204953
Verified
PRP without proof (not generated)
2017-11-30storm5510CDCC2CFC46036DB6220051553
History
DateUserTypeResult
2019-07-04alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-11-30storm5510C-PRP
M2494721/22906528223/1710954503431 : CDCC2CFC46036DB6
2017-10-14Oliver KruseC-PRP
M2494721/22906528223/1710954503431 : CDCC2CFC46036DB6
2008-07-14George WoltmanF-ECMFactor: 1710954503431