Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
7552021Factored
FactorDigitsBitsDate
1847900441053005766016150030173097.22023-03-16 18:18:09
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)2000-03-27alan hopperDBDDE6CF13A3C8EC1655995
Verified (Factored)2002-03-24Anders LundgrenDBDDE6CF13A3C8EC1769646
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-03-21rucio882D9DCC0FE5213A1380031853
P-1 factors
DateFactorB1B2
2023-03-16184790044105300576601615003017310000010146566430
History
DateUserTypeResult
2023-03-21James HeinrichCERT
PRP Certification
Proof certified good
2023-03-21rucioC-PRP
M7552021/184790044105300576601615003017 : 882D9DCC0FE5213A
PRP proof power = 8
PRP: Verified
Proof certified good
2023-03-16DRobinsonPEF-PM1
Factor: 184790044105300576601615003017 / (P-1, B1=3100000, B2=10146566430)
2022-10-28linamentNF
no factor from 2^71 to 2^72
2021-03-15-Anonymous-NF
no factor from 2^70 to 2^71
2021-03-15-Anonymous-NF
no factor from 2^69 to 2^70
2020-01-21USAFSSNF-PM1
B1=445000, B2=13795000, E=12
2020-01-19mnd9NF
no factor from 2^68 to 2^69
2018-07-31ramgeisNF
no factor from 2^67 to 2^68
2016-09-27Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-09VictordeHollanderNF
no factor from 2^65 to 2^66
2013-12-01David CampeauNF
no factor from 2^64 to 2^65
2013-10-18NesowaNF
no factor from 2^63 to 2^64
2012-07-04James HeinrichNF-PM1
B1=90000, B2=1710000, E=6