测试点8一直错，求求大佬看看

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int a = sc.nextInt();
        for (int i = n; i < a; i++) {
            if (i % 2 == 0 ) continue; // 跳过所有偶数
            if (isH(i) && isZ(i)) {
                System.out.println(i);
            }
        }
        sc.close();
    }

    public static boolean isH(int num) {
        int original = num;
        int reversed = 0;
        while (num > 0) {
            reversed = reversed * 10 + num % 10;
            num /= 10;
        }
        return original == reversed;
    }

    public static boolean isZ(int num) {
        if (num <= 1) return false;
        if (num == 2 || num == 3) return true;
        if (num % 2 == 0 || num % 3 == 0) return false;

        for (int i = 5; i * i <= num; i += 6) {
            if (num % i == 0 || num % (i + 2) == 0) return false;
        }
        return true;
    }
}