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solution to problem #3 from projecteuler.net
//Project Euler #3 using System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; namespace Rextester { public class Program { public static void Main(string[] args) { long n = 600851475143; for(int i=1; i <= Math.Sqrt(n)+1; i++) if(n % i == 0 && IsPrime(i)) Console.Write(" "+i); } public static bool IsPrime(int number) { if(number == 1 || number == 2) return true; for(int i=2; i<=Math.Sqrt(number)+1; i++) if(number % i == 0) return false; return true; } } }
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