21 lines
392 B
Python
21 lines
392 B
Python
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"""
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输入一个正整数判断它是不是素数
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Version: 0.1
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Author: 骆昊
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Date: 2018-03-01
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"""
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from math import sqrt
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num = int(input('请输入一个正整数: '))
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end = int(sqrt(num))
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is_prime = True
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for x in range(2, end + 1):
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if num % x == 0:
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is_prime = False
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break
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if is_prime and num != 1:
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print('%d是素数' % num)
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else:
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print('%d不是素数' % num)
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