def pop_count(T):
    T = (T & 0x55555555) + ((T >> 1) & 0x55555555)
    T = (T & 0x33333333) + ((T >> 2) & 0x33333333)
    T = (T & 0x0F0F0F0F) + ((T >> 4) & 0x0F0F0F0F)
    T = (T & 0x00FF00FF) + ((T >> 8) & 0x00FF00FF)
    T = (T & 0x0000FFFF) + ((T >> 16) & 0x0000FFFF)
    return T


def main():
    N, K = map(int, input().split())
    A = list(map(int, input().split()))
    A.sort(reverse=True)

    memo = {i: set() for i in range(N)}
    for bit in range(1, 1 << N):
        memo[pop_count(bit)-1].add(bit)

    dp = [0] * (1 << N)
    dp[0] = K
    for bitlist in memo.values():
        for bit in bitlist:
            for j, a in enumerate(A):
                dp[bit] = max(dp[bit], dp[bit ^ (1 << j)] % a)
    print(dp[(1 << N) - 1])


if __name__ == "__main__":
    main()