Quick Facts ← 1998 1999 2000 →, 命名 ...
1999
← 1998 1999 2000 →
數表整數
命名
小寫一千九百九十九
大寫壹仟玖佰玖拾玖
序數詞第一千九百九十九
one thousand nine hundred and ninety-ninth
識別
種類整數
性質
質因數分解
表示方式
1999
算籌
希臘數字,ΑϠϞΘ´
羅馬數字MCMXCIX
二進制11111001111(2)
三進制2202001(3)
四進制133033(4)
五進制30444(5)
八進制3717(8)
十二進制11A7(12)
十六進制7CF(16)
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1999可以指:

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