如何理解逢8进1和逢16进1

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select * from tbl_Articles_data WHERE ArticleID=1826449 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1826449 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1125163,228871,382727,1093264,237650,1129181,456145,1109416,1071507,1110586,1072278,1127187,1127419,1044569,321164,459089,1086095,1052433,1034501,1107851,3453160,397300,195406,201823,1095578,1044877,282840,1093266,1123893,1049422) ORDER BY field (ArticleID,1125163,228871,382727,1093264,237650,1129181,456145,1109416,1071507,1110586,1072278,1127187,1127419,1044569,321164,459089,1086095,1052433,1034501,1107851,3453160,397300,195406,201823,1095578,1044877,282840,1093266,1123893,1049422)