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
1997903Factored
FactorDigitsBitsDate
2467208656522823654172167.72014-02-01 17:02:31
ECM
DigitsB1Curves
2550000280 / 280
3025000059 / 640
Estimated T-Level: 25.5 ⓘ
TF below 2^80 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Jeremy BuhlerBEDED9B3BEB67F7C0
Verified (Factored)1999-01-17Matthew GauthierBEDED9B3BEB67F7C63440
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-05Oliver KruseADDEC992880927C31013
Verified2017-11-13kkmrkkblmbrbkADDEC992880927C3121692313
History
DateUserTypeResult
2017-11-13kkmrkkblmbrbkC-PRP
M1997903/246720865652282365417 : ADDEC992880927C3
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1997903/246720865652282365417 : ADDEC992880927C3
PRP: Verified
PRP without proof (not generated)
2014-02-01-Anonymous-F
Factor: 246720865652282365417 / TF: 5-68
2014-01-04Never Odd Or EvenNF
no factor from 2^69 to 2^70
2014-01-04Never Odd Or EvenNF
no factor from 2^68 to 2^69
2014-01-04Never Odd Or EvenNF
no factor from 2^67 to 2^68
2014-01-04Never Odd Or EvenNF
no factor from 2^66 to 2^67
2014-01-04Never Odd Or EvenNF
no factor from 2^65 to 2^66
2011-05-03XyzzyNF
no factor from 2^64 to 2^65
2011-05-03XyzzyNF
no factor from 2^63 to 2^64
2011-05-03XyzzyNF
no factor from 2^62 to 2^63
2011-05-03XyzzyNF
no factor from 2^1 to 2^62
2011-03-05kurlyNF-PM1
B1=1000000, B2=30000000, E=12
2009-04-19Rob_DeeNF
no factor from 2^60 to 2^61