mirror of https://github.com/TheAlgorithms/C
33 lines
626 B
C
33 lines
626 B
C
/**
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* \file
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* \brief [Problem 3](https://projecteuler.net/problem=3) solution
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*
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* Problem:
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*
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* The prime factors of 13195 are 5,7,13 and 29. What is the largest prime
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* factor of a given number N? e.g. for 10, largest prime factor = 5. For 17,
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* largest prime factor = 17.
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*/
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#include <stdio.h>
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/** Main function */
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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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return 0;
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} |