{"url":"https://mmxsrup.hatenablog.com/entry/2017/03/08/234355","published":"2017-03-08 23:43:55","image_url":null,"provider_name":"Hatena Blog","author_name":"mmxsrup","blog_title":"srup\u306e\u30e1\u30e2\u5e33","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmmxsrup.hatenablog.com%2Fentry%2F2017%2F03%2F08%2F234355\" title=\"ARC 044 A - \u7d20\u6570\u5224\u5b9a - srup\u306e\u30e1\u30e2\u5e33\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","provider_url":"https://hatena.blog","blog_url":"https://mmxsrup.hatenablog.com/","version":"1.0","title":"ARC 044 A - \u7d20\u6570\u5224\u5b9a","author_url":"https://blog.hatena.ne.jp/mmxsrup/","height":"190","description":"\u554f\u984c \u554f\u984c\u6982\u8981 N\u304c\u7d20\u6570\u306a\u3089Prime N\u304c\u5408\u6210\u6570\u3067, 1\u306e\u4f4d\u304c2,5\u3067\u5272\u308a\u5207\u308c\u305a, \u5404\u6841\u306e\u548c\u304c3\u3067\u5272\u308a\u5207\u308c\u306a\u3044\u3068\u304d, Prime \u305d\u308c\u4ee5\u5916\u306a\u3089 Not Prime \u89e3\u6cd5 \u307e\u305a, \u666e\u901a\u306b\u7d20\u6570\u5224\u5b9a\u3092\u3057, \u7d20\u6570\u306a\u3089Prime. \u6b21\u306b, 1\u306e\u304f\u3089\u3044\u304c2, 5\u3067\u5272\u308a\u5207\u308c\u305a, \u5404\u6841\u306e\u548c\u304c3\u3067\u5272\u308a\u5207\u308c\u306a\u3044\u3051\u308c\u3070, Prime\u3068\u3057\u3066 \u305d\u308c\u4ee5\u5916\u306fNot Prime\u3068\u306a\u308b. \u30df\u30b9 \u5404\u6841\u306e\u548c\u304c\uff13\u306e\u500d\u6570\u306e\u6642\u306f, \u305d\u306e\u6570\u306f3\u306e\u500d\u6570\u3067\u3057\u305f. \u5fd8\u308c\u3066\u305f. N = 100a+10b + c = 99a + 9b + (a + b + c) \u306a\u306e\u3067, a+b+c(\u5404\u6841\u306e\u548c)\u304c3\u306e\u500d\u6570\u3067\u3042\u308c\u3070, 3\u306e\u500d\u6570\u3068\u306a\u308b. \u5404\u6841\u306e\u548c\u304c9\u2026","categories":["arc"]}