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17 lines
283 B
Python
17 lines
283 B
Python
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import math
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def is_prime(num):
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if num <= 1:
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return False
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elif num == 2:
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return True
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elif num % 2 == 0:
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return False
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bound = int(math.ceil(math.sqrt(num)))
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for div in range(3, bound + 1, 2):
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if num % div == 0:
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return False
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return True
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