Marin Mersenne 2^P-1
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MnStatusDetails
15133051Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
357461354891972663402875714416731101.52022-10-12 10:05:40
ECM
DigitsB1Curves
255000014 / 280
Estimated T-Level: 20.3 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Bad2002-08-10Juan Carlos Vazquez5C567ADEAD678F1814140438
Verified (Factored)2006-03-01Ars Technica Team Prime Rib740BE5F117EAD1DF13210132
Verified (Factored)2006-06-13Eric Bravick740BE5F117EAD1DF4141401
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-01-24Dobri1C87854719A1DE4D144423053
History
DateUserTypeResult
2023-11-04nordiNF-PM1
B1=480000, B2=462958650
2023-10-22nordiNF-PM1
B1=480000
2023-01-24curtiscCERT
PRP Certification
Proof certified good
2023-01-24DobriC-PRP
M15133051/3574613548919726634028757144167 : 1C87854719A1DE4D
PRP proof power = 8
PRP: Verified
Proof certified good
2022-10-12ATHF-PP1
Start=2/7, B1=1000000, B2=29000000, Factor: 3574613548919726634028757144167
2021-10-10-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-03SRBaseNF
no factor from 2^70 to 2^71
2021-06-29lycornNF
no factor from 2^69 to 2^70
2017-10-11ramgeisNF
no factor from 2^68 to 2^69
2017-01-17mikrNF
no factor from 2^67 to 2^68
2017-01-17Smok_bmv NF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-05-14NesowaNF
no factor from 2^66 to 2^67