#include <bits/stdc++.h>

using namespace std;

int main() {
  int n;
  cin >> n;
  bool flag = true;
  for (int i = 2; i <= n - 1; i++)
    if (n % i == 0) {
      flag = false;
      break;
    }
  if (flag) {
    cout << "prime" << endl;
  } else {
    cout << "not prime" << endl;
  }
  return 0;
}