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Project Euler
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**3**

Problem 3 asks:

What is the largest prime factor of the number 600 851 475 143?

Here’s what I did in Java:

public class Problem3 { public static void main(String[] args) { long number = 600851475143L; int result = 0; for (int factor = 2; factor <= number; factor++) { if (number % factor == 0) { result = factor; number /= factor; factor = 2; } } System.out.println(result); } }

This required a little more thought to write efficiently, but my solution turned out very simple so it’s easy to follow.