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

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Exponent Range:










MnStatusDetails
6980173Factored
FactorDigitsBitsDate
62817658448279164252492272.42024-02-25 09:19:48
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)1999-06-15C. Cooper / S. Boone38D7F05BC3165EE51195984
Verified (Factored)2001-12-22Craig Davidson38D7F05BC3165EE51890041
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2024-02-25Jason Lynch28415C775CD91A9C1489881753
P-1 factors
DateFactorB1B2
2024-02-25628176584482791642524912143000142401839580
History
DateUserTypeResult
2024-02-25curtiscCERT
PRP Certification
Proof certified good
2024-02-25Jason LynchC-PRP
M6980173/6281765844827916425249 : 28415C775CD91A9C
PRP proof power = 8
PRP: Verified
Proof certified good
2024-02-25Jason LynchF-PM1
Factor: 6281765844827916425249 / (P-1, B1=12143000, B2=142401839580)
2021-11-29Seth_TrNF-PM1
B1=4000000, B2=110000000, E=12
2021-09-25SRBaseNF
no factor from 2^71 to 2^72
2021-09-07SRBaseNF
no factor from 2^70 to 2^71
2021-08-09takahashiNF
no factor from 2^69 to 2^70
2020-04-10TJAOINF
no factor from 2^68 to 2^69
2020-01-30takahashiNF-PM1
B1=600000, B2=12000000, E=12
2018-02-27-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-26Gordon SpenceNF
no factor from 2^66 to 2^67
2015-07-03VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-14lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2011-12-05James HeinrichNF-PM1
B1=135000, B2=2835000, E=6