const INF: usize = 1usize << 60;

fn main() {
    let mut nk = String::new();
    std::io::stdin().read_line(&mut nk).ok();
    let nk: Vec<usize> = nk.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let n = nk[0];
    let k = nk[1];
    let mut a = String::new();
    std::io::stdin().read_line(&mut a).ok();
    let a: Vec<usize> = a.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();

    let mut other_mins = vec![INF; 1<<n];
    for i in 0..1<<n {
        other_mins[i] = (0..n).filter(|&j| ((i >> j) & 1) == 0).map(|j| a[j]).min().unwrap_or(INF);
    }
    let mut dp = vec![0usize; 1<<n];
    dp[0] = k;
    for i in 0..1<<n {
        for j in 0..n {
            if ((i >> j) & 1) == 1 { continue; }
            let idx = i | (1 << j);
            if dp[idx] % other_mins[idx] < dp[i] % a[j] % other_mins[idx] {
                dp[idx] = dp[i] % a[j];
            }
        }
    }
    println!("{}", dp[(1<<n)-1]);
}