公章下面的13位数是什么意思?

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select * from tbl_Articles WHERE ArticleID=1104799 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1104799 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1104799 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1123647,1129857,1128873,1125009,1009092,1124231,1106533,1114758,1113097,1128135,1104276,1129265,1084077,1125389,1127915,1121622,1104333,1108682,1128731,1084739,1128926,1107408,1111282,1276295,1108678,1105962,1103977,1130846,1117482,1130061) ORDER BY field (ArticleID,1123647,1129857,1128873,1125009,1009092,1124231,1106533,1114758,1113097,1128135,1104276,1129265,1084077,1125389,1127915,1121622,1104333,1108682,1128731,1084739,1128926,1107408,1111282,1276295,1108678,1105962,1103977,1130846,1117482,1130061)