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

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MnStatusDetails
16720667Factored
FactorDigitsBitsDate
1040141680014052041489246001693096.42022-02-05 18:45:46
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2003-02-09Matthew J. HillBD78E699D6CB048A14467915
Verified (Factored)2007-10-29Ars Technica Team Prime RibBD78E699D6CB048A611682
P-1 factors
DateFactorB1B2
2022-02-0510401416800140520414892460016963400032652000
History
DateUserTypeResult
2022-02-05Architects CubedF-PM1
Factor: 104014168001405204148924600169 / (P-1, B1=634000, B2=32652000)
2022-01-27RichD0NF
no factor from 2^72 to 2^73
2021-09-25-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-09SRBaseNF
no factor from 2^70 to 2^71
2020-06-07lycornNF
no factor from 2^69 to 2^70
2018-03-11ramgeisNF
no factor from 2^68 to 2^69
2018-03-11ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-09-16NesowaNF
no factor from 2^66 to 2^67