private static List<Integer> computePalindromePrimeList() {
        List<Integer> palindromePrimesList = new LinkedList<>();
        for(int i = 2; i <= 1000; i++) {
            if(isPalindrome(i) && isPrime(i)) {
                palindromePrimesList.add(i);
            }
        }
        return palindromePrimesList;
    }