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
803449Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
12592352997858921952667470491418051896739126.62023-09-10 01:43:37
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000240 / 1566
Estimated T-Level: 30.8 ⓘ
TF below 2^97 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski289D0
Verified (Factored)Paul Victor NovareseBA20BD5FE34B289D0
Verified (Factored)Dieter StahelBA20BD5FE34B289D0
Verified (Factored)2015-04-11MadPooBA20BD5FE34B289D733412
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-09-10masser38ADC799D672BB86125830853
History
DateUserTypeResult
2023-09-28masserF-PP1
Start=6/5, B1=10000000, Factor: 125923529978589219526674704914180518967
2023-09-10dirkswansonCERT
PRP Certification
Proof certified good
2023-09-10masserC-PRP
M803449/125923529978589219526674704914180518967 : 38ADC799D672BB86
PRP proof power = 6
PRP: Verified
Proof certified good
2023-09-10masserF-PP1
Start=174/23, B1=10000000, Factor: 125923529978589219526674704914180518967
2022-04-04lycornNF-PM1
B1=8027770, B2=501024934410
2021-09-13gLaussNF-PP1
Start=2/7, B1=7500000, B2=585000000
2019-11-09YxinityNF
no factor from 2^69 to 2^70
2019-11-09YxinityNF
no factor from 2^68 to 2^69
2017-06-19Smok_bmv NF
no factor from 2^67 to 2^68
2017-06-19Smok_bmv NF
no factor from 2^66 to 2^67
2017-06-16Smok_bmv NF
no factor from 2^65 to 2^66
2016-03-01lycornNF
no factor from 2^64 to 2^65
2015-11-24Sid & AndyNF-PM1
B1=8034490, B2=241034700, E=12
2015-09-26Gordon SpenceNF
no factor from 2^63 to 2^64
2015-09-26Gordon SpenceNF
no factor from 2^62 to 2^63
2015-04-11MadPooC-LL
BA20BD5FE34B289D
2015-01-16snme2pm1NF
no factor from 2^61 to 2^62
2013-10-25David CampeauNF-PM1
B1=1650000, B2=56100000, E=12
2012-08-01JossNF-PM1
B1=1606898
2010-05-25Architects CubedNF
no factor from 2^60 to 2^61
2008-10-12Sturle SundeNF
no factor from 2^59 to 2^60
2008-10-12Sturle SundeNF
no factor from 2^58 to 2^59