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另一神秘數字 6174
142857 是一個神秘數字,6174 是另一個神秘數字。有人稱之為神秘的
數學黑洞。只要你任選 4 個不完全相同的数字(像 1111, 3333 等就不行,因為
最大最小排列都一樣,兩者相減結果是 0),讓 “最大排列” 減 “最小排列”(例
如 4321-1234),二者之差也是一组四個不同的數字。繼續用“最大排列”減“最
小排列”. . . . . . . . . . 不断重複這個動作,最後一定會得到相同的结果:6174。
之所以說 “6174” 是 “数学黑洞”,是因為無論你怎麼換那 4 個數字,只
要不是完全重複,最後都逃脱不了 “6174” 的魔掌。而這個 “最大減最小” 的
動作,最多不會超過 7 次!這又加深了 “6174” 的神秘性。若以 6321 为例:
6321-1236=5085 第一次
8550-0558=7992 第二次
9972-2799=7173 第三次
7731-1377=6354 第四次
6543-3456=3087 第五次
8730-0378=8352 第六次
8532-2358=6174 第七次
為甚麼不繼續下去了呢?因為 7641-1467 又會等於 6174,會無限循環
(若相減結果低于 1000,則千位數補 0 繼續算下去)。至於為甚麼會這樣?簡
單的說,由 n 個數所組成的數字有限,連續做 “最大減最小” 變換,或稱卡普
耶卡( Kaprekar)變換,最後勢必出現循環。而这个数字“6174”也被称为“卡
普耶卡常數”(或翻譯成卡布列克常數)。
這個世界充满奥秘的事情還很多,包括瑪雅古文明,傳說中的亞特蘭提
斯、百慕達三角,聖經例如啟示錄的預言,獸的數目 666 等,請瀏覽
http://www.sdaglobal.org 和
http://www.sums56.hitechemall.com/article/mathgame.htm
( Ctrl + Click to follow link )
只要還有神秘之處,勢必會吸引無數人投身其中。
在追寻 “6174” 的卡普耶卡变换中,你有可能第一次就碰到黑洞(當距
組是 3,2,1,和中組是 6,2 的時候),也可能要連做 7 次變換才走得到終點。只
要你繼續保持追尋真相的衝勁,無論走遠路還是抄近路,一直堅持做下去,終究
會得到相同的答案;而這同時也是人生的奥秘。

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数学黑洞

  • 1. 另一神秘數字 6174 142857 是一個神秘數字,6174 是另一個神秘數字。有人稱之為神秘的 數學黑洞。只要你任選 4 個不完全相同的数字(像 1111, 3333 等就不行,因為 最大最小排列都一樣,兩者相減結果是 0),讓 “最大排列” 減 “最小排列”(例 如 4321-1234),二者之差也是一组四個不同的數字。繼續用“最大排列”減“最 小排列”. . . . . . . . . . 不断重複這個動作,最後一定會得到相同的结果:6174。 之所以說 “6174” 是 “数学黑洞”,是因為無論你怎麼換那 4 個數字,只 要不是完全重複,最後都逃脱不了 “6174” 的魔掌。而這個 “最大減最小” 的 動作,最多不會超過 7 次!這又加深了 “6174” 的神秘性。若以 6321 为例: 6321-1236=5085 第一次 8550-0558=7992 第二次 9972-2799=7173 第三次 7731-1377=6354 第四次 6543-3456=3087 第五次 8730-0378=8352 第六次 8532-2358=6174 第七次 為甚麼不繼續下去了呢?因為 7641-1467 又會等於 6174,會無限循環 (若相減結果低于 1000,則千位數補 0 繼續算下去)。至於為甚麼會這樣?簡 單的說,由 n 個數所組成的數字有限,連續做 “最大減最小” 變換,或稱卡普
  • 2. 耶卡( Kaprekar)變換,最後勢必出現循環。而这个数字“6174”也被称为“卡 普耶卡常數”(或翻譯成卡布列克常數)。 這個世界充满奥秘的事情還很多,包括瑪雅古文明,傳說中的亞特蘭提 斯、百慕達三角,聖經例如啟示錄的預言,獸的數目 666 等,請瀏覽 http://www.sdaglobal.org 和 http://www.sums56.hitechemall.com/article/mathgame.htm ( Ctrl + Click to follow link ) 只要還有神秘之處,勢必會吸引無數人投身其中。 在追寻 “6174” 的卡普耶卡变换中,你有可能第一次就碰到黑洞(當距 組是 3,2,1,和中組是 6,2 的時候),也可能要連做 7 次變換才走得到終點。只 要你繼續保持追尋真相的衝勁,無論走遠路還是抄近路,一直堅持做下去,終究 會得到相同的答案;而這同時也是人生的奥秘。