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public class Main {
    public static int isPrime(int n) {
        // Check if the number is less than or equal to 1
        if (n <= 1) {
            return 0; // Not prime
        }
        
        // Check for divisibility from 2 to the square root of the number
        for (int i = 2; i <= Math.sqrt(n); i++) {
            if (n % i == 0) {
                return 0; // Not prime
            }
        }
        
        return 1; // Prime
    }

    public static void main(String[] args) {
        // Test the isPrime function
        int number = 17; // Change this to test different numbers
        if (isPrime(number) == 1) {
            System.out.println(number + " is prime.");
        } else {
            System.out.println(number + " is not prime.");
        }
    }
}