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
2444471
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 263
Factored
FactorDigitsBitsDate
4888943722.2old
63556247825.92008-07-14 20:23:56
ECM
DigitsB1Curves
2550000201 / 280
Estimated T-Level: 23.6
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)
2017-10-13Oliver KruseC212807E237E6677299392953
Verified
PRP without proof (not generated)
2017-11-28storm5510C212807E237E66772188549353
History
DateUserTypeResult
2018-09-28alpertronNF-PM1B1=2000000, B2=60000000, E=12
2017-11-28storm5510C-PRP
M2444471/4888943/63556247 : C212807E237E6677
2017-10-13Oliver KruseC-PRP
M2444471/4888943/63556247 : C212807E237E6677
2008-07-14George WoltmanF-ECMFactor: 63556247