using System;

public class Program

{

    public static void Main()

    {

        var company_name = "CRM ACQ SOLE TRADER";

        var identifier = string.Empty;

        var hash = GenerateHash(company_name, ref identifier);

        identifier += hash.ToString();

        Console.WriteLine(identifier);

     }

​

        private static int GenerateHash(string companyName, ref string identifier)

        {

            var hash = companyName.GetHashCode() << 0x64;

​

            if (hash >= 0) return hash;

​

            hash *= -1;

            identifier += "1";

​

            return hash;

        }

}