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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Catalan pseudoprime ： ウィキペディア英語版 Catalan pseudoprime In mathematics, a Catalan pseudoprime is an odd composite number ''n'' satisfying the congruence :$(-1)^\}\; \backslash cdot\; C\_\}\; \backslash equiv\; 2\; \backslash pmod\; n,$ where ''Cm'' denotes the ''m''-th Catalan number. The congruence also holds for every odd prime number ''n'' that justifies the name pseudoprimes for composite numbers ''n'' satisfying it. == Properties == The only known Catalan pseudoprimes are: 5907, 1194649, and 12327121 with the latter two being squares of Wieferich primes. In general, if ''p'' is a Wieferich prime, then ''p''2 is a Catalan pseudoprime. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Catalan pseudoprime」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.