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

PrimeNet Exponent Status

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MnStatusDetails
1833383Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
2139044613771237.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-04Oliver Kruse8EF3822209B8BE6F1013
Verified2017-11-06kkmrkkblmbrbk8EF3822209B8BE6F1135777413
History
DateUserTypeResult
2017-11-06kkmrkkblmbrbkC-PRP
M1833383/213904461377 : 8EF3822209B8BE6F
PRP: Verified
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1833383/213904461377 : 8EF3822209B8BE6F
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12