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

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MnStatusDetails
17355851Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
18153428183351795915907772580.62024-11-26 16:26:45
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)2003-01-16Ars Technica Team Prime Rib3704904B09511CAB992845
Verified (Factored)2006-07-25Rick Cummings3704904B09511CAB9618522
P-1 factors
DateFactorB1B2
2024-11-26181534281833517959159077710000001000000
History
DateUserTypeResult
2024-11-26Sid & AndyF-PM1
Factor: 1815342818335179591590777 / (P-1, B1=1000000)
2021-11-26-Anonymous-NF
no factor from 2^72 to 2^73
2021-09-21-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-10SRBaseNF
no factor from 2^70 to 2^71
2020-03-31lycornNF
no factor from 2^69 to 2^70
2018-03-24ramgeisNF
no factor from 2^68 to 2^69
2018-03-24ramgeisNF
no factor from 2^67 to 2^68
2014-09-04NesowaNF
no factor from 2^66 to 2^67
2014-03-05NesowaNF
no factor from 2^65 to 2^66