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
782669Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
8803625817413853373249992479.52023-04-28 11:16:24
ECM
DigitsB1Curves
2550000280 / 280
30250000156 / 640
Estimated T-Level: 26.2 ⓘ
TF below 2^82 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski57D0
Verified (Factored)Brian J. Beesley28119EC7D35E857D0
Verified (Factored)Larry English28119EC7D35E857D0
Verified (Factored)2015-04-11MadPoo28119EC7D35E857D46471
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-04-28masser0DA8A84A7E9A5F4114475553
History
DateUserTypeResult
2023-04-28curtiscCERT
PRP Certification
Proof certified good
2023-04-28masserC-PRP
M782669/880362581741385337324999 : 0DA8A84A7E9A5F41
PRP proof power = 6
PRP: Verified
Proof certified good
2023-04-28masserF-PP1
Start=6/5, B1=6000000, B2=276000000, Factor: 880362581741385337324999
2023-04-03masserNF-PP1
Start=171/53, B1=6000000, B2=276000000
2023-04-01masserNF-PP1
Start=2/7, B1=6000000, B2=288000000
2022-03-06Gordon SpenceNF
no factor from 2^67 to 2^68
2022-02-11LordJuliusNF-PM1
B1=10000000, B2=127825247550
2020-02-22YxinityNF
no factor from 2^66 to 2^67
2017-11-22Smok_bmv NF
no factor from 2^65 to 2^66
2016-03-15lycornNF
no factor from 2^64 to 2^65
2015-11-20Sid & AndyNF-PM1
B1=7826690, B2=234800700, E=12
2015-10-22Gordon SpenceNF
no factor from 2^63 to 2^64
2015-10-22Gordon SpenceNF
no factor from 2^62 to 2^63
2015-04-11MadPooC-LL
28119EC7D35E857D
2015-03-07NRNF
no factor from 2^61 to 2^62
2013-10-29David CampeauNF-PM1
B1=1625000, B2=55250000, E=12
2012-07-14JossNF-PM1
B1=1565338
2012-01-09JossNF-PM1
B1=912949
2011-08-28JossNF-PM1
B1=456474
2011-07-10JossNF-PM1
B1=273884
2010-06-24Architects CubedNF
no factor from 2^60 to 2^61
2008-10-13Sturle SundeNF
no factor from 2^59 to 2^60
2008-10-13Sturle SundeNF
no factor from 2^58 to 2^59