Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
6173767Factored
FactorDigitsBitsDate
1548163613590083615772167.12011-09-10 15:01:33
1805351029708572166012167.32022-03-18 07:53:30
ECM
DigitsB1Curves
25500003 / 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)1998-11-14Howard Porter525484EF17458A090
Verified (Factored)2001-02-18Stephen Wood525484EF17458A093340014
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-02kkmrkkblmbrbk8BF09B89B51493461013
Verified (Factored)2018-09-19rucio8BF09B89B51493461368263013
Verified2022-03-24PoaoDC69459EA8E759712581217453
History
DateUserTypeResult
2022-03-24Evil GeniusCERT
PRP Certification
Proof certified good
2022-03-24PoaoC-PRP
M6173767/154816361359008361577/180535102970857216601 : DC69459EA8E75971
PRP proof power = 7
PRP: Verified
Proof certified good
2022-03-19LordJuliusNF
no factor from 2^66 to 2^67
2022-03-19LordJuliusNF
no factor from 2^65 to 2^66
2022-03-19LordJuliusNF
no factor from 2^64 to 2^65
2022-03-19LordJuliusNF
no factor from 2^62 to 2^64
2022-03-18TJAOIF
Factor: 180535102970857216601 / TF: 67-68
2018-09-19rucioC-PRP
M6173767/154816361359008361577 : 8BF09B89B5149346
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-02kkmrkkblmbrbkC-PRP
M6173767/154816361359008361577 : 8BF09B89B5149346
PRP: Verified (Factored)
PRP without proof (not generated)
2011-09-10JimBaF-ECM
Factor: 154816361359008361577
2011-04-29markrNF-PM1
B1=115000, B2=2242500, E=6