import java.util.*;

public class Main {
    static final int MOD = 1000000007;
    static int n;
    static int k;
    static int[] arr;
    static int[][] dp;
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        n = sc.nextInt();
        k = sc.nextInt();
        arr = new int[n];
        for (int i = 0; i < n; i++) {
            arr[i] = sc.nextInt();
        }
        dp = new int[n][1 << n];
        int max = 0;
        for (int i = 0; i < n; i++) {
            max = Math.max(max, dfw(i, (1 << n) - 1));
        }
        System.out.println(max);
    }
    
    static int dfw(int idx, int mask) {
        if (dp[idx][mask] == 0) {
            int next = (mask ^ (1 << idx));
            if (next == 0) {
                dp[idx][mask] = k % arr[idx];
            } else {
                for (int i = 0; i < n; i++) {
                    if ((next & (1 << i)) == 0) {
                        continue;
                    }
                    dp[idx][mask] = Math.max(dp[idx][mask], dfw(i, next) % arr[idx]);
                }
            }
        }
        return dp[idx][mask];
    }
}