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
2745839Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
2693173807991238.0old
86212830051062071931962.92016-11-04 12:26:48
ECM
DigitsB1Curves
255000058 / 280
Estimated T-Level: 21.0
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-20Oliver KruseAF7321D595CF890D2240808353
Verified2017-12-06kkmrkkblmbrbkAF7321D595CF890D2210431053
History
DateUserTypeResult
2022-11-22USAFSSNF-PM1
B1=255000, B2=191586780
2017-12-06kkmrkkblmbrbkC-PRP
M2745839/269317380799/8621283005106207193 : AF7321D595CF890D
PRP: Verified
PRP without proof (not generated)
2017-10-20Oliver KruseC-PRP
M2745839/269317380799/8621283005106207193 : AF7321D595CF890D
PRP: Verified
PRP without proof (not generated)
2016-11-04TJAOIF
Factor: 8621283005106207193 / TF: 62-63