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Project Euler Problem 6
//Rextester.Program.Main is the entry point for your code. Don't change it //Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5 using System; using System.Collections.Generic; namespace Rextester { public class Program { static int primes_found = 0, target = 10001; static List<int> primes = new List<int>(); public static void Main(string[] args) { int n = 2, last_prime_found = 0; do { if (IsPrime (n)) { primes.Add(n); last_prime_found = n; primes_found++; } n++; } while (primes_found < target); Console.WriteLine("The solution is: " + last_prime_found); } public static bool IsPrime(int n) { // Console.WriteLine("Testing: " + n); foreach (int prime in primes) { if (prime * prime > n) { break; } else if (n % prime == 0) { return false; } } return true; } } }
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