521

521
← 520 521 522 →
数表整数

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命名
小寫五百二十一
大寫伍佰貳拾壹
序數詞第五百二十一
five hundred and twenty-first
識別
種類整數
性質
質數第98個
質因數分解素数
表示方式
521
算筹
希腊数字ΦΚΑ´
羅馬數字DXXI
泰文数字๕๒๑在维基数据编辑
孟加拉数字৫২১在维基数据编辑
印度數字५२१在维基数据编辑
摩尔斯电码· · · · · · · − − − · − − − −在维基数据编辑
高棉數字៥២១在维基数据编辑
二进制1000001001
三进制201022(3)
四进制20021(4)
五进制4041(5)
八进制1011(8)
十二进制375(12)
十六进制209(16)

521 是介于520522之间的一个自然数整数

性质

人类文化与生活

中国方言众多,各方言区的人互相不能通话。在汉语众多方言中,部分方言521与中国文言文“吾爱伊”翻译为中国官方语言普通话现代文是“我爱你”的谐音(也有部分中国方言说法是“我愿意”的谐音),但在粤语中521是“唔易一”的谐音,在爱情方面含义不好“唔易一”(翻译为普通话是不容易专一),近几年在中国商家的抄作下在中国网络兴起,和520一起,成为向心仪之人告白、求婚、订婚、结婚或行任何诉说爱意之举,一说520主要是为女性设定的节日,521则主要是为男性设定。通常由5月20日先由男方向女方提出,如果两厢情愿,则由女方5月21日向男方回应,5月20日和21日也逐渐成为了中国年轻人心中的网络情人节

其他521相关

参见

  1. ^ Sloane, N.J.A. (编). Sequence A013998 (Unrestricted Perrin pseudoprimes). The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. 

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