Some Fibonacci, C#

Some Fibonacci

//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 bool Fibonacci(int number1, int number2, int number3)
    {
            /*int[] input = new int[3];
            
            input[0] = 1;
            input[1] = 1;
            input[2] = 2;*/
            
            bool isFibonacci = true;
            
            if (number1 + number2 == number3)
            {
                isFibonacci = true;
            }
            else 
            {
                isFibonacci = false;
            }
            
            Console.WriteLine(isFibonacci);
            return isFibonacci;
                
    }
        
        public static void Main(string[] args)
        {
            
            int primeNumber = 1;
            int primeCounter = 0;
            
            int primeA = 24;
            int primeB = 101;
            int primeC = 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 && primeA == 24 )
                {
                    primeA = primeNumber;
                    Console.WriteLine("The 24th Prime number is: " + primeA);      
                      
                }
                else if (primeCounter == 101  && primeB == 101)
                {
                    primeB = primeNumber;
                    Console.WriteLine("The 101th Prime number is: " + primeB);
                }
                else if (primeCounter == 251 && primeC == 251)
                {
                    primeC = primeNumber;
                    Console.WriteLine("The 251th Prime number is: " + primeC);
                }
                
                primeNumber++;
                
                if (primeCounter == 251)
                    break;
                
            }           
                
            Fibonacci(primeA, primeB, primeC);
            
            
        }
    }
    
    
}


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