import java.util.Scanner;
public class Main {
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int count = 0;
for(int i =2 ; i<n; i++)
{
if(n%i == 0)
{
count++;
}
}
if(count>=1)
{
System.out.println("not a prime number");
}
else
{
System.out.println("Prime");
}
}
}