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27 lines
495 B
C
27 lines
495 B
C
/*
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Problem:
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The prime factors of 13195 are 5,7,13 and 29. What is the largest prime factor
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of a given number N? e.g. for 10, largest prime factor = 5. For 17, largest
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prime factor = 17.
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*/
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#include <stdio.h>
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int main()
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{
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int n = 0;
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scanf("%d", &n);
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int prime = 1;
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int i = 2;
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while (i * i <= n)
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{
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while (n % i == 0)
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{
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prime = i;
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n /= i;
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}
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i += 1;
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}
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if (n > 1)
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prime = n;
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printf("%d\n", prime);
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} |