import java.math.BigInteger;
import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		BigInteger n = new BigInteger(sc.next());
		int[] num100 = {1,1,1,3,1,5,1,7,7,7,1,11,1,13,7,7,1,8,1,19,19,7,1,23,23,8,8,8,1,8,1,8,8,8,8,8,1,8,8,8,1,8,1,8,8,8,1,8,14,8,8,8,1,8,8,8,8,8,1,8,1,8,8,8,8,8,1,8,8,8,1,8,1,8,8,8,8,8,1,8,14,8,1,8,8,8,8,8,1,8,8,8,8,8,8,8,1,8,8};
		if(n.intValue() < 100){
			System.out.println(num100[n.intValue()-1]);
		}else{
			if(n.mod(BigInteger.valueOf(8)).intValue() != 1){
				System.out.println(8);
			}else{
				BigInteger m = n.subtract(BigInteger.valueOf(8));
				if(m.isProbablePrime(50)){
					System.out.println(14);
				}else{
					System.out.println(8);
				}
			}
		}
	}
}