判断是不是素数

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select * from tbl_Articles WHERE ArticleID=466988 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=466988 LIMIT 0,1
select * from tbl_Articles_sphinx where id=466988 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(469387,382852,3515023,2510251,1017594,1645224,515896,1089594,1814574,1081931,3054737,550249,100772,843685,806576,1618725,1101903,1092341,939125,86676,85990,850717,3473838,566933,524405,86689,3066189,699484,3045066,1112028) ORDER BY field (ArticleID,469387,382852,3515023,2510251,1017594,1645224,515896,1089594,1814574,1081931,3054737,550249,100772,843685,806576,1618725,1101903,1092341,939125,86676,85990,850717,3473838,566933,524405,86689,3066189,699484,3045066,1112028)