fn gcd(a: isize, b: isize) -> isize {
    if b == 0 { return a; }
    gcd(b, a%b)
}

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

    if a.iter().filter(|&&v| v == 0).count() > 0 {
        println!("YES");
        return;
    }
    let result = a.iter().map(|&v| gcd(h, v.abs())).fold(1isize, |x, y| gcd(h, x*y));
    if result == h {
        println!("YES");
    } else {
        println!("NO");
    }
}