Marin Mersenne 2^P-1
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MnStatusDetails
15182693Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
169988167480802611817932373.82023-03-23 06:49:39
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-07-06Andres Muñoz García-Alejo4B58BDA92FF909792542233
Verified (Factored)2006-10-01Ars Technica Team Prime Rib4B58BDA92FF909793790816
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-06-26Funky WaddleE80BFBD18DFCB2181372789553
History
DateUserTypeResult
2023-11-04nordiNF-PM1
B1=480000, B2=454342350
2023-10-22nordiNF-PM1
B1=480000
2023-06-28RichD0NF
no factor from 2^72 to 2^73
2023-06-27CybertomCERT
PRP Certification
Proof certified good
2023-06-26Funky WaddleC-PRP
M15182693/16998816748080261181793 : E80BFBD18DFCB218
PRP proof power = 8
PRP: Verified
Proof certified good
2023-03-23ATHF-PP1
Start=2/7, B1=1000000, Factor: 16998816748080261181793
2021-10-09-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-03RichD0NF
no factor from 2^70 to 2^71
2021-07-06lycornNF
no factor from 2^69 to 2^70
2017-12-29ramgeisNF
no factor from 2^68 to 2^69
2017-12-29ramgeisNF
no factor from 2^67 to 2^68
2016-02-08ThaNF-PM1
B1=300000, B2=6000000, E=12
2014-05-14NesowaNF
no factor from 2^66 to 2^67
2013-09-16David CampeauNF
no factor from 2^65 to 2^66