翻訳と辞書 Words near each other ・ 168th Battalion (Oxfords), CEF ・ 168th Brigade Support Battalion ・ 168th Engineer Brigade (United States) ・ 168th Field Artillery Regiment ・ 168th Infantry Regiment (United States) ・ 168th meridian ・ 168th meridian east ・ 168th meridian west ・ 168th Military Police Battalion ・ 168th New York State Legislature ・ 168th Ohio Infantry ・ 168th Street ・ 168th Street (BMT Jamaica Line) ・ 168th Street (New York City Subway) ・ 169 ・ 169 (number) ・ 169 BC ・ 169 Mary Street, Brisbane ・ 169 series ・ 169 Squadron ・ 169 Zelia ・ 1690 ・ 1690 AM ・ 1690 in art ・ 1690 in England ・ 1690 in France ・ 1690 in Ireland ・ 1690 in Italy ・ 1690 in literature ・ 1690 in music Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク 169 (number) ： ウィキペディア英語版 169 (number) 169 (one hundred () sixty-nine) is the natural number following 168 and preceding 170. ==In mathematics== 169 is an odd number, a composite number, and a deficient number. 169 is a square number: 13 x 13 = 169, and if each number is reversed the equation is still true: 31 x 31 = 961. 144 shares this property: 12 x 12 = 144, 21 x 21 = 441. 169 is one of the few squares to also be a centered hexagonal number. Like all odd squares, it is a centered octagonal number. 169 is an odd-indexed Pell number, thus it is also a Markov number, appearing in the solutions (2, 169, 985), (2, 29, 169), (29, 169, 14701), etc. 169 is the sum of seven consecutive primes: 13 + 17 + 19 + 23 + 29 + 31 + 37. 169 is a difference in consecutive cubes, equaling $8^3-7^3.$ 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「169 (number)」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.