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
7887823Factored
FactorDigitsBitsDate
23636997634540152491133372581.02022-12-29 10:11:36
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)1999-08-31Jason Scantland2C276BB65B095B924053800
Verified (Factored)2002-06-09Stephen Wood2C276BB65B095B925660516
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-01-03Perig2BDB984B7BF0DFBC1263709453
P-1 factors
DateFactorB1B2
2022-12-29236369976345401524911333728000002038723050
History
DateUserTypeResult
2023-01-04Ben DeloCERT
PRP Certification
Proof certified good
2023-01-03PerigC-PRP
M7887823/2363699763454015249113337 : 2BDB984B7BF0DFBC
PRP proof power = 8
PRP: Verified
Proof certified good
2022-12-29yoyorocks1F-PM1
Factor: 2363699763454015249113337 / (P-1, B1=2800000, B2=2038723050)
2022-04-10TheJudgerNF
no factor from 2^73 to 2^74
2022-04-10TheJudgerNF
no factor from 2^72 to 2^73
2021-09-30SRBaseNF
no factor from 2^71 to 2^72
2021-09-06SRBaseNF
no factor from 2^70 to 2^71
2021-08-21SRBaseNF
no factor from 2^69 to 2^70
2020-02-07TJAOINF
no factor from 2^68 to 2^69
2018-08-05ramgeisNF
no factor from 2^67 to 2^68
2016-08-31Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-09VictordeHollanderNF
no factor from 2^65 to 2^66
2013-12-19David CampeauNF
no factor from 2^64 to 2^65
2013-10-05NesowaNF
no factor from 2^63 to 2^64
2011-04-22James HeinrichNF-PM1
B1=155000, B2=3371250, E=6