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

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MnStatusDetails
8624669Factored
FactorDigitsBitsDate
2647428174160159321291824012787.82021-12-14 20:30:34
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)1999-12-01Jeff RunaldueC6C24BE76987F74C2378286
Verified (Factored)2002-12-25Hannu KalliC6C24BE76987F74C4758056
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-12-20mrhDC0C0C032BEB7C491433097053
History
DateUserTypeResult
2021-12-20curtiscCERT
PRP Certification
Proof certified good
2021-12-20mrhC-PRP
M8624669/264742817416015932129182401 : DC0C0C032BEB7C49
PRP proof power = 8
PRP: Verified
Proof certified good
2021-12-14masserF-PP1
Start=2/7, B1=375000, Factor: 264742817416015932129182401
2021-10-17SRBaseNF
no factor from 2^71 to 2^72
2021-10-09Sid & AndyNF
no factor from 2^70 to 2^71
2021-08-22SRBaseNF
no factor from 2^69 to 2^70
2019-11-18mnd9NF
no factor from 2^68 to 2^69
2018-04-21monstNF
no factor from 2^67 to 2^68
2016-02-03snme2pm1NF
no factor from 2^66 to 2^67
2015-05-25VictordeHollanderNF
no factor from 2^65 to 2^66
2014-01-26lycornNF
no factor from 2^64 to 2^65
2012-02-15bcp19NF-PM1
B1=100000, B2=1825000, E=6