Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
517043Factored
FactorDigitsBitsDate
56119432497462324791962.32008-01-23 08:45:40
ECM
DigitsB1Curves
2550000280 / 280
30250000200 / 640
Estimated T-Level: 26.6
TF below 2^83 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-27Oliver Kruse55DE66CCCD3F3A161013
Verified2017-11-03kkmrkkblmbrbk55DE66CCCD3F3A16141377313
Unverified (Reliable)2020-04-19Oliver Kruse71F0C234271522__139278053
History
DateUserTypeResult
2022-12-19USAFSSNF-PM1
B1=2000000, B2=6733146420
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2020-04-19Oliver KruseC-PRP
M517043/5611943249746232479 : 71F0C234271522__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-11-03kkmrkkblmbrbkC-PRP
M517043/5611943249746232479 : 55DE66CCCD3F3A16
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M517043/5611943249746232479 : 55DE66CCCD3F3A16
PRP: Unverified (Reliable)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=1500000, B2=50000000, E=12
2008-01-23James HeinrichF-ECM
Factor: 5611943249746232479