import static javax.swing.JOptionPane.*;
class primtalltest {
  public static void main(String[] args) {
	String tallLest = showInputDialog("Skriv inn ditt tall");
	int tall = Integer.parseInt(tallLest);{
		int i;
		for (i=2; i < tall ;i++ ){
			int n = tall%i;
			if (n==0){
				System.out.println("Ikke primtall!");
				break;
				}
			}
			if(i == tall){
			System.out.println("Primtall!");
			}
		}
	}
}