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

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MnStatusDetails
15529951Factored
FactorDigitsBitsDate
180759953041644277882392373.92022-01-22 00:35:27
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)2002-11-24Hans-Ove Frimodig06E1D4770AEB599312699804
Verified (Factored)2006-05-29Andrew R King06E1D4770AEB59935435937
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2023-08-21Funky WaddleE5F5E72401B1929F1747699353
P-1 factors
DateFactorB1B2
2022-01-221807599530416442778823930000001929180330
History
DateUserTypeResult
2023-08-21lozcsCERT
PRP Certification
Proof certified good
2023-08-21Funky WaddleC-PRP
M15529951/18075995304164427788239 : E5F5E72401B1929F
PRP proof power = 8
PRP: Verified
Proof certified good
2022-01-25Anton RepkoF
Factor: 18075995304164427788239 / TF: 73-74
2022-01-25Anton RepkoNF
no factor from 2^72 to 2^73
2022-01-22Denial140F-PM1
Factor: 18075995304164427788239 / (P-1, B1=3000000, B2=1929180330)
2021-09-14-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-07SRBaseNF
no factor from 2^70 to 2^71
2021-06-03lycornNF
no factor from 2^69 to 2^70
2018-03-23ramgeisNF
no factor from 2^68 to 2^69
2018-03-23ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2013-12-28NesowaNF
no factor from 2^66 to 2^67