static void Main()
{
long targetNumber = 600851475143, factor = 1;
string primeFactors = "1";
Problem3 prime = new Problem3();
for (long i = 2; i <= Math.Sqrt(targetNumber); i++)
{
if (targetNumber % ((2 * i) - 1) == 0)
{
factor = ((2 * i) - 1);
if (prime.PrimeNumber(factor))
{
primeFactors = primeFactors + " , " + factor.ToString();
}
}
}
Console.WriteLine(primeFactors);
Console.ReadKey();
}