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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
327209Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
471550041194131819357831672685.32019-03-19 14:40:25
ECM
DigitsB1Curves
2550000280 / 280
30250000572 / 640
Estimated T-Level: 29.5 ⓘ
TF below 2^93 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski55AD0
Verified (Factored)Unknown55AD0
Verified (Factored)Guillermo Ballester Valor61F5CE28EABCD5AD0
Verified (Factored)Klaus Kastens61F5CE28EABCD5AD0
Verified (Factored)Eivind Triel61F5CE28EABCD5AD20673
Verified (Factored)2016-06-01MadPoo61F5CE28EABCD5AD260438
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-03-19ATHA14BC6E4897BB23112055453
Verified2019-03-20kkmrkkblmbrbkA14BC6E4897BB231125649953
History
DateUserTypeResult
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2019-03-20kkmrkkblmbrbkC-PRP
M327209/47155004119413181935783167 : A14BC6E4897BB231
PRP: Verified
PRP without proof (small exponent)
2019-03-19ATHC-PRP
M327209/47155004119413181935783167 : A14BC6E4897BB231
PRP: Verified
PRP without proof (small exponent)
2019-03-19alexF-ECM
Factor: 47155004119413181935783167 / (ECM curve 143, B1=250000, B2=25000000, Sigma=6510346427898524)
2018-01-27Gordon SpenceNF
no factor from 2^64 to 2^65
2016-07-12mikrNF-PM1
B1=60000000, B2=3000000000, E=12
2016-06-01MadPooC-LL
61F5CE28EABCD5AD
2015-12-13Gordon SpenceNF
no factor from 2^63 to 2^64
2015-12-13Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-22NRNF
no factor from 2^61 to 2^62
2013-03-16Sid & AndyNF
no factor from 2^60 to 2^61
2012-01-14alpertronNF-PM1
B1=10000000, B2=200000000, E=12
2011-08-06JossNF-PM1
B1=1414189
2009-02-06Sturle SundeNF
no factor from 2^59 to 2^60
2008-12-30Sturle SundeNF
no factor from 2^58 to 2^59