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
6964609Factored
FactorDigitsBitsDate
61945420926809273094063373372892.32023-09-02 20:59:21
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)2000-04-19Liu Bin5257CE7D4F46BDDF639110
Verified (Factored)2001-10-27James Wanless5257CE7D4F46BDDF4552551
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-09-03Naegi Makoto531E710F3EDECA1A1473059153
P-1 factors
DateFactorB1B2
2023-09-02619454209268092730940633733735000009616446840
History
DateUserTypeResult
2023-09-03Ali Ben Hadj KhalifaCERT
PRP Certification
Proof certified good
2023-09-03Naegi MakotoC-PRP
M6964609/6194542092680927309406337337 : 531E710F3EDECA1A
PRP proof power = 8
PRP: Verified
Proof certified good
2023-09-02ThaF-PM1
Factor: 6194542092680927309406337337 / (P-1, B1=3500000, B2=9616446840)
2021-11-07Seth_TrNF-PM1
B1=2000000, B2=58000000, E=12
2021-09-25SRBaseNF
no factor from 2^71 to 2^72
2021-09-06SRBaseNF
no factor from 2^70 to 2^71
2021-08-04takahashiNF
no factor from 2^69 to 2^70
2020-04-24TJAOINF
no factor from 2^68 to 2^69
2018-02-27-Anonymous-NF
no factor from 2^67 to 2^68
2016-04-24Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-26VictordeHollanderNF
no factor from 2^65 to 2^66
2014-02-15lycornNF
no factor from 2^64 to 2^65
2014-02-09NesowaNF
no factor from 2^63 to 2^64
2011-09-07Carsten KossendeyNF-PM1
B1=440000, B2=13530000, E=12