using System;

using System.Linq;

public class Program

{

    public static void Main()

    {       

        //in this exercise you need to display the first 500 prime numbers (starting at 1) in the output window

        //declare variables

        //  one variable is needed for a counter

        //  one variable is needed to keep track of the number of prime numbers found

        int i = 1;

        int intPrimesFound = 0;

        //write a while loop that outputs the first 50 prime numbers using Console.WriteLine(string) to output them

        //      within the loop you can use the IsPrime method which is provided and returns True or False

        //          example: IsPrime(7)

        //      tip - your loop will contain an if statement that checkes if the counter is prime

        while (intPrimesFound < 500)

        {

            if (IsPrime(i))

            {

                Console.WriteLine(i);

                intPrimesFound++;

            }

            i++;

        }

    }

    //Method writtenf for you to determine if a number is prime

    //  returns true or false and can be called like: IsPrime(7);

    static bool IsPrime(int n)

    {

        if (n > 1)

        {

            return Enumerable.Range(1, n).Where(x => n%x == 0)

                             .SequenceEqual(new[] {1, n});

        }

​

        return false;

    }

}