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
3516533Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
196925849927.6old
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-11-08Oliver Kruse9CC5B7FBC4359B221215915953
Verified2017-12-17kkmrkkblmbrbk9CC5B7FBC4359B221178408853
History
DateUserTypeResult
2022-09-09JossNF-PM1
B1=1000000, B2=233218440
2022-04-26JossNF-PM1
B1=1000000, B2=145208700
2022-02-20JossNF
no factor from 2^67 to 2^68
2020-10-19JossNF-PM1
B1=351653, B2=3516533, E=6
2020-10-19JossNF-PM1
B1=351653
2017-12-17kkmrkkblmbrbkC-PRP
M3516533/196925849 : 9CC5B7FBC4359B22
PRP: Verified
PRP without proof (not generated)
2017-11-08Oliver KruseC-PRP
M3516533/196925849 : 9CC5B7FBC4359B22
PRP: Verified
PRP without proof (not generated)