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

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MnStatusDetails
20004713Factored
FactorDigitsBitsDate
341795479746036560388862732684.82022-01-14 17:44:58
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2004-06-12Thomas R. StephensonC28A4188D43771DC6164617
Verified (Factored)2007-10-29T.OtsuboC28A4188D43771DC6685605
History
DateUserTypeResult
2022-01-14ATHF-PP1
Start=2/7, B1=1000000, Factor: 34179547974603656038886273
2021-05-24-Anonymous-NF
no factor from 2^72 to 2^73
2021-05-24-Anonymous-NF
no factor from 2^71 to 2^72
2019-06-30ixfd64NF-PM1
B1=350000, B2=6500000, E=12
2019-06-16NumberwangNF-PM1
B1=190000, B2=3372500, E=6
2019-01-14slaurNF
no factor from 2^70 to 2^71
2017-03-13ramgeisNF
no factor from 2^69 to 2^70
2016-01-13mikrNF
no factor from 2^68 to 2^69
2016-01-13mikrNF
no factor from 2^67 to 2^68
2011-07-13XyzzyNF
no factor from 2^66 to 2^67