static int FibonacciIteraviteOneLoop(int num)
        {
            System.Numerics.BigInteger current = 1;
            System.Numerics.BigInteger previous = 0;

            int i = 1;

            while ((current + previous) % num != 0)
            {
                System.Numerics.BigInteger temp = current + previous;
                previous = current;
                current = temp;
                i++;
            }

            return i + 1;
        }