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
6153047Factored
FactorDigitsBitsDate
2550404116452094044072167.82018-05-30 12:53:42
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-11-21Dan OrbanE7F58BFD41610D650
Verified (Factored)2002-05-18george de fockertE7F58BFD41610D653255576
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-06-18_p95holder_4FAD50CCF1B7096B1255174653
Verified2018-06-19kkmrkkblmbrbk4FAD50CCF1B7096B1358751753
History
DateUserTypeResult
2018-06-19kkmrkkblmbrbkC-PRP
M6153047/255040411645209404407 : 4FAD50CCF1B7096B
PRP: Verified
PRP without proof (not generated)
2018-06-18_p95holder_C-PRP
M6153047/255040411645209404407 : 4FAD50CCF1B7096B
PRP: Verified
PRP without proof (not generated)
2018-05-30ramgeisF
Factor: 255040411645209404407 / TF: 67-68*
2016-04-10Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-10-08Bruno VictalNF
no factor from 2^65 to 2^66
2014-09-18monstNF
no factor from 2^64 to 2^65
2014-09-10NesowaNF
no factor from 2^63 to 2^64
2013-03-05Squeeky_SquirrelNF-PM1
B1=115000, B2=2242500, E=6