import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Main main = new Main();
Scanner scan = new Scanner(System.in);
int number = scan.nextInt();
System.out.println(main.isPrimeNumber(number));
}
public Boolean isPrimeNumber(int number) {
//write your code here......
for(int i=2;i<=Math.sqrt(number);i++){
if(number%i==0) return false;
}
return true;
}
}

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