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
2150299Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
8539654442631239.6old
2106310263730318391857.52015-06-29 14:23:57
ECM
DigitsB1Curves
2550000280 / 280
30250000164 / 640
Estimated T-Level: 26.3
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-08Oliver Kruse1FDD197C147E0AA32013
Verified2017-11-18ATH1FDD197C147E0AA3259336713
History
DateUserTypeResult
2017-11-18ATHC-PRP
M2150299/853965444263/210631026373031839 : 1FDD197C147E0AA3
PRP: Verified
PRP without proof (not generated)
2017-10-08Oliver KruseC-PRP
M2150299/853965444263/210631026373031839 : 1FDD197C147E0AA3
PRP: Verified
PRP without proof (not generated)
2016-03-21alpertronNF-PM1
B1=500000, B2=15000000, E=12
2015-06-29TJAOIF
Factor: 210631026373031839 / TF: 57-58