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
6928099Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
145552562891570482857052632683.62023-07-22 02:22:30
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)1999-05-30Gerry SnyderE257F637F295CA5D0
Verified (Factored)2001-10-27Mark SheehanE257F637F295CA5D2394190
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-07-22Naegi Makoto053B87EE209080AF184558653
P-1 factors
DateFactorB1B2
2023-07-221455525628915704828570526335000009616446840
History
DateUserTypeResult
2023-07-22StephenCLippCERT
PRP Certification
Proof certified good
2023-07-22Naegi MakotoC-PRP
M6928099/14555256289157048285705263 : 053B87EE209080AF
PRP proof power = 8
PRP: Verified
Proof certified good
2023-07-22ThaF-PM1
Factor: 14555256289157048285705263 / (P-1, B1=3500000, B2=9616446840)
2021-09-28SRBaseNF
no factor from 2^71 to 2^72
2021-08-11SRBaseNF
no factor from 2^70 to 2^71
2021-07-22takahashiNF
no factor from 2^69 to 2^70
2021-06-02Dylan DelgadoNF-PM1
B1=630000, B2=18900000, e=12
2021-05-31takahashiNF-PM1
B1=1000000, B2=30000000, E=12
2020-05-01TJAOINF
no factor from 2^68 to 2^69
2019-04-29takahashiNF-PM1
B1=300000, B2=5000000, E=6
2018-02-25-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-03Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-26VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-17lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2012-08-16NesowaNF-PM1
B1=85000, B2=1508750, E=6