Marin Mersenne 2^P-1
Username
Password
Forgot password?
Black
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2611909Factored
FactorDigitsBitsDate
70556646569996033776839828749779451936119.12019-10-06 23:50:43
ECM
DigitsB1Curves
255000033 / 280
Estimated T-Level: 20.6 ⓘ
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-04-11Jan Bayer0E84E4B293644AD70
Verified (Factored)1999-04-13Lon Green0E84E4B293644AD72510206
Verified (Factored)2018-06-30kkmrkkblmbrbk0E84E4B293644AD7894660
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-10-07mnd9135874F351836D271247019753
Verified2019-10-08marssystems135874F351836D271216371353
P-1 factors
DateFactorB1B2
2019-10-06705566465699960337768398287497794519261190926119090
History
DateUserTypeResult
2019-10-08marssystemsC-PRP
M2611909/705566465699960337768398287497794519 : 135874F351836D27
PRP: Verified
PRP without proof (not generated)
2019-10-07mnd9C-PRP
M2611909/705566465699960337768398287497794519 : 135874F351836D27
PRP: Verified
PRP without proof (not generated)
2019-10-06masserF-PM1
Factor: 705566465699960337768398287497794519 / (P-1, B1=2611909, B2=26119090, E=12)
2019-04-29TJAOINF
no factor from 2^67 to 2^68
2018-06-30kkmrkkblmbrbkC-LL
0E84E4B293644AD7
2017-08-28Gordon SpenceNF
no factor from 2^66 to 2^67
2017-07-10JossNF-PM1
B1=400000, B2=4000000, E=6
2016-05-21JossNF-PM1
B1=200000, B2=3600000, E=6
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2016-01-16ramgeisNF
no factor from 2^65 to 2^66
2015-02-18VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-18VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-12JossNF-PM1
B1=124574
2013-01-14dbaughNF
no factor from 2^62 to 2^63
2012-06-25Grant McCrackenNF
no factor from 2^61 to 2^62
2010-12-14markrNF-PM1
B1=100000, B2=2125000, E=6
2010-11-17JossNF-PM1
B1=20000
2009-01-30Sturle SundeNF
no factor from 2^60 to 2^61