freeCodeCamp/guide/chinese/mathematics/prime-numbers/index.md

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---
title: Prime Numbers
localeTitle: 质数
---
## 质数
素数是大于1的任何数字只能由1或其自身均分。如果它可以除以另一个数字那么它就是一个复合数。
例子:
5是素数因为它只能由它自己5和1均匀地分割。
12是非素数因为它可以被均匀地分成1,2,3,4,6和12。
前十个素数是2,3,5,7,11,13,17,19,23和29。