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

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MnStatusDetails
6480869Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
3113158681064664870966197840746219338635589044281750164.42023-05-27 23:58:34
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)1999-06-15George S. VaughanD6DEB2ECEC5995F53520063
Verified (Factored)2001-08-18Aaron BD6DEB2ECEC5995F54388540
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-05-28linament0F637F5454D8C6EA1290424253
P-1 factors
DateFactorB1B2
2023-05-2731131586810646648709661978407462193386355890442817400000018004726740
History
DateUserTypeResult
2023-05-28MatiasCardulloCERT
PRP Certification
Proof certified good
2023-05-28linamentC-PRP
M6480869/31131586810646648709661978407462193386355890442817 : 0F637F5454D8C6EA
PRP proof power = 7
PRP: Verified
Proof certified good
2023-05-27linamentF-PM1
Factor: 31131586810646648709661978407462193386355890442817 / (P-1, B1=4000000, B2=18004726740)
2022-08-17takahashiNF-PM1
B1=2500000, B2=50028510
2021-10-17SRBaseNF
no factor from 2^71 to 2^72
2021-08-10SRBaseNF
no factor from 2^70 to 2^71
2021-03-18takahashiNF
no factor from 2^69 to 2^70
2019-11-30mnd9NF
no factor from 2^68 to 2^69
2018-06-06ramgeisNF
no factor from 2^67 to 2^68
2016-04-14Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-10-26snme2pm1NF
no factor from 2^65 to 2^66
2014-08-31NesowaNF-PM1
B1=395000, B2=10072500, E=12
2014-08-09lycornNF
no factor from 2^64 to 2^65
2014-08-02NesowaNF
no factor from 2^63 to 2^64