//FIND THE 100001st PRIME NUMBER.
static void Main(string[] args)
        {
            bool isPrime = true;
            int count = 0;
            int i;

            for (i = 1; i <= 100000; i++)
            {
                isPrime = true;
                for (int j = 2; j < i; j++)
                {
                    if (i % j == 0)
                    {
                        isPrime = false;
                        break;
                    }
                    else { isPrime = true; }
                }
                if (isPrime)
                {
                    count++;
                }
                if (count == 10001)
                {
                    break;
                }
            }
            Console.WriteLine(i);
            Console.ReadLine();
        }
//Always getting output as "100001"