num = int(input("请输入一个数字: "))
质数大于 1
if num > 1:
查看因子
for i in range(2,num): (不懂)
if (num % i) == 0:
print(num,"不是质数")
print(i,"乘于",num//i,"是",num)
break
else:
print(num,"是质数")
如果输入的数字小于或等于 1,不是质数
else:
print(num,"不是质数")
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