{"description":"\u7121\u6570\u306b\u5b9a\u7406\u3092\u6b8b\u3057\u305f\u30aa\u30a4\u30e9\u30fc\u3067\u3059\u304c\u3001\u6570\u5b66\u3067\u5358\u306b\u300c\u30aa\u30a4\u30e9\u30fc\u306e\u5b9a\u7406\u300d\u3068\u3044\u3046\u3068\u3001 a\u03c6(n) \u2261 1 (mod n) a\u3068n\u306f\u4e92\u3044\u306b\u7d20 \u306e\u3053\u3068\u3092\u8a00\u3044\u307e\u3059\u3002\u03c6(n)\u306f\u30aa\u30a4\u30e9\u30fc\u306e\u03c6\u95a2\u6570\u3067\u3059\u3002 n\u304c\u7d20\u6570\u306e\u5834\u5408\u3001\u30d5\u30a7\u30eb\u30de\u30fc\u306e\u5c0f\u5b9a\u7406\u306b\u306a\u308a\u307e\u3059\u3002 an-1 \u2261 1 (mod n) \u8a3c\u660e\u306f\u9069\u5f53\u306a\u3082\u306e\u3092\u53c2\u7167\u3057\u3066\u3082\u3089\u3046\u3053\u3068\u306b\u3057\u3066\u3001\u3053\u3053\u3067\u306f\u3044\u304f\u3064\u304b\u306e\u4f8b\u3067\u3053\u306e\u5b9a\u7406\u3092\u78ba\u8a8d\u3057\u307e\u3057\u3087\u3046\u3002 a = 7 n = 2 : 71 = 3 * 2 + 1 n = 3 : 72 = 16 * 3 + 1 n = 4 : 72 = 12 * 4 + 1 n = 5 : 74 = 480 * 5 + 1 n = 6 : 72 = 8 * 6 +\u2026","title":"\u30aa\u30a4\u30e9\u30fc\u306e\u5b9a\u7406","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","blog_title":"inamori\u2019s diary","blog_url":"https://inamori.hateblo.jp/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F20091127%2Fp1\" title=\"\u30aa\u30a4\u30e9\u30fc\u306e\u5b9a\u7406 - inamori\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["PE","\u6570\u5b66","\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"author_name":"inamori","published":"2009-11-27 00:00:01","author_url":"https://blog.hatena.ne.jp/inamori/","type":"rich","version":"1.0","image_url":null,"width":"100%","height":"190","url":"https://inamori.hateblo.jp/entry/20091127/p1"}