Número primers, C#

Número primers

//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;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static bool EsPrimer(long input){
            if(input == 1 || input == 2){ return true;}
            if(input == 0){ return false;}
           
            for(long i = 2; i < input; i++){
             
                if(input % i == 0){
           
                    return false;
                }
                
            }
            return true;
        }
        public static void Main(string[] args)
        {        
            long n = 179424673; //canviar aixo
            Console.WriteLine("El numero {0} es primer? Anem a veure-ho", n);
            
            if(EsPrimer(n)){
                Console.WriteLine("El numero {0} es primer",n);
            }
            else
                Console.WriteLine("No ho es");
        }
    }
}


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