從尾到頭的質數(解答)
2007/09/21 12:04
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一位數:2,3,5,7
二位數:23,29,31,37,53,59,71,73,79
三位數:233,239,293,311,313,317,373,
379,593,599,719,733,739,797
四位數:2333,2339,2393,2399,2939,
3119,3137,3733,3739,3793,
3797,5939,7193,7331,7333,
7393
五位數:23333,23339,23399,23993,
29399,31193,31379,37337,
37339,37397,59393,59399,
73331,73939
6位數:233993,239933,293999,373379,
373393,593933,593993,739391,
739393,739397,739399
7位數:2339933,2399333,2939999,
3733799,5939333,7393913,
7393931,7393933
8位數:23399339,29399999,37337999,
59393339,73939133
9位數:沒有
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