using System;

namespace Sample
{
    class Program
    {
        static void Main(string[] args)
        {
            var S = Console.ReadLine();
            var N = S.Length;
            var count = 0;

            for (int i = 0; i < Math.Pow(2, N - 1); i++)
            {
                long num = 0;
                long n = long.Parse(S.Substring(0, 1));

                for (int j = 0; j < N - 1; j++)
                {
                    long x = (i >> j) & 1;
                    if (x == 1)
                    {
                        num += n;
                        n = long.Parse(S.Substring(j + 1, 1));
                    }
                    else
                    {
                        n = n * 10 + long.Parse(S.Substring(j + 1, 1));
                    }
                }
                num += n;
                if (isPrime(num)) count++;
            }
            Console.WriteLine(count);
        }

        static bool isPrime(long num)
        {
            for (long i = 2; i < (long)Math.Sqrt(num); i++)
            {
                if (num % i == 0)
                {
                    return false;
                }
            }
            return true;
        }
    }
}