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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1207757Factored
FactorDigitsBitsDate
94410290263989402254404079926533733355939129.52022-06-01 06:56:29
ECM
DigitsB1Curves
2550000280 / 280
30250000168 / 640
Estimated T-Level: 26.3 ⓘ
TF below 2^82 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski13D20
Verified (Factored)Tom Cage2D82BB93B8E8B3D20
Verified (Factored)tom ehlert2D82BB93B8E8B3D20
Verified (Factored)2015-11-12MadPoo2D82BB93B8E8B3D282568
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-06-02LordJuliusD8250A772C7206BF1111875253
P-1 factors
DateFactorB1B2
2022-06-0194410290263989402254404079926533733355928000000143500330050
History
DateUserTypeResult
2022-06-02cswigerCERT
PRP Certification
Proof certified good
2022-06-02LordJuliusC-PRP
M1207757/944102902639894022544040799265337333559 : D8250A772C7206BF
PRP proof power = 6
PRP: Verified
Proof certified good
2022-06-01Sid & AndyF-PM1
Factor: 944102902639894022544040799265337333559 / (P-1, B1=28000000, B2=143500330050)
2018-07-06ramgeisNF
no factor from 2^67 to 2^68
2018-07-06ramgeisNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-12MadPooC-LL
2D82BB93B8E8B3D2
2015-09-15ramgeisNF
no factor from 2^65 to 2^66
2015-03-27lycornNF
no factor from 2^64 to 2^65
2015-03-26omylistNF
no factor from 2^63 to 2^64
2014-12-28mikrNF-PM1
B1=4218475, B2=156083565, E=12
2014-09-18JossNF-PM1
B1=253143
2014-04-19JossNF-PM1
B1=200000
2012-10-11dbaughNF
no factor from 2^62 to 2^63
2011-05-09XyzzyNF
no factor from 2^61 to 2^62
2009-04-14Sturle SundeNF
no factor from 2^60 to 2^61