PrimeChecker

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Hello_Name_
{
    class Program
    {
        static void Main(string[] args)
        {
            long number = Math.Abs(long.Parse(Console.ReadLine()));
            bool isPrime = IsPrime(number);
            Console.WriteLine(isPrime);
        }
        static bool IsPrime(long number)
        {

            if(number == 0 || number==1)
                {
                   return false;
                }
            for (int divider = 2; divider <= Math.Sqrt(number); divider++)
            {

               if (number%divider==0)
                {
                    return false;
                }
            }
            return true;
        }
    }
}