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
16929421Factored
FactorDigitsBitsDate
74561398621147862805832272.72020-09-17 13:06:56
300970061779311813551967358572994.62020-09-17 13:06:56
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2003-02-02Clive Gifford602393AE5A3D07D111540769
Verified (Factored)2006-09-11Eric Bravick602393AE5A3D07D114830678
P-1 factors
DateFactorB1B2
2020-09-172244074874935876693910818560811647024412473389646312890008238000
History
DateUserTypeResult
2024-02-26nordiNF-PM1
B1=500000
2020-09-17James HeinrichF-PM1
Factor: 224407487493587669391081856081164702441247338964631 / (P-1, B1=289000, B2=8238000, E=12)
2020-05-18lycornNF
no factor from 2^69 to 2^70
2018-02-25ramgeisNF
no factor from 2^68 to 2^69
2018-02-25ramgeisNF
no factor from 2^67 to 2^68
2016-03-17Mark RoseNF
no factor from 2^65 to 2^66
2014-09-21NesowaNF
no factor from 2^66 to 2^67