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判断223431是质数还是合数
更新时间: 2020-09-12 00:00:00  

223、431均为质数。

合数指自然数中除了能被1和本身整除外,还能被其他数不包括0整除的数。与之相对的是质数,而1既不属于质数也不属于合数。最小的合数是4。

质数定义为在大于1的自然数中,除了1和它本身以外不再有其他因数。

关键词: 判断 质数 还是 合数

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