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
3043543Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
273918871928.0old
ECM
DigitsB1Curves
255000055 / 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
Verified2017-10-28Oliver Kruse6390E0EC57C27B591201765453
Verified2017-12-10kkmrkkblmbrbk6390E0EC57C27B591168463953
History
DateUserTypeResult
2022-02-13JossNF-PM1
B1=1000000, B2=119912100
2022-01-26JossNF-PM1
B1=1000000
2021-03-21JossNF
no factor from 2^67 to 2^68
2021-01-12JossNF-PM1
B1=304354, B2=3043543, E=6
2020-12-19JossNF-PM1
B1=152177
2017-12-10kkmrkkblmbrbkC-PRP
M3043543/273918871 : 6390E0EC57C27B59
PRP: Verified
PRP without proof (not generated)
2017-10-28Oliver KruseC-PRP
M3043543/273918871 : 6390E0EC57C27B59
PRP: Verified
PRP without proof (not generated)