24 101 251 Primes, C#

24 101 251 Primes

//Find the 24th, 101st and 251st prime number.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            
            int primeNumber = 1;
            int primeCounter = 0;
            
            int prime24 = 24;
            int prime101 = 101;
            int prime251 = 251;
            
            while (true)
                
            {
                if ( primeNumber % 2 != 0 && primeNumber % 3 != 0 && primeNumber % 5 != 0 && primeNumber % 7 != 0 && primeNumber / primeNumber == 1)
                {
                    //Console.WriteLine(primeNumber);
                    primeCounter++;
                }
                
                if (primeCounter == 24 && prime24 == 24 )
                {
                    prime24 = primeNumber;
                    Console.WriteLine("The 24th Prime number is: " + prime24);      
                      
                }
                else if (primeCounter == 101  && prime101 == 101)
                {
                    prime101 = primeNumber;
                    Console.WriteLine("The 101th Prime number is: " + prime101);
                }
                else if (primeCounter == 251 && prime251 == 251)
                {
                    prime251 = primeNumber;
                    Console.WriteLine("The 251th Prime number is: " + prime251);
                }
                
                primeNumber++;
                
                if (primeNumber == 10000)
                    break;
                
            }           
                
        }
    }
}


run \| edit \| history \| help	0

Please log in to post a comment.