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Cunningham project : ウィキペディア英語版 | Cunningham project The Cunningham project is a project, started in 1925, to factor numbers of the form ''b''''n'' ± 1 for ''b'' = 2, 3, 5, 6, 7, 10, 11, 12 and large ''n''. The project is named after Allan Joseph Champneys Cunningham, who published the first version of the table together with Herbert J. Woodall. There are three printed versions of the table, the most recent published in 2002, as well as an online version.〔(【引用サイトリンク】title=The Cunningham Project )〕 The current limits of the exponents are: ==Factors of Cunningham numbers== Two types of factors can be derived from a Cunningham number without having to use a factorisation algorithm: algebraic factors, which depend on the exponent, and Aurifeuillian factors, which depend on both the base and the exponent.
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「Cunningham project」の詳細全文を読む
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