BJ4
#判断是否质数num = int(input('请输入任意整数来判断是否质数: '))if num > 1: for i in range(2, num): if (num % i) == 0: print(num,'不是质数') print(i,'乘以', num//i,'是',num) break else: print(num, '是质数')else: print(num, '是质数')