import java.util.*;
import java.io.*;
 
public class Main {
    public static void main(String[] args) throws Exception {
        FastScanner sc = new FastScanner(System.in);
        PrintWriter pw = new PrintWriter(System.out);
        StringBuilder sb = new StringBuilder();
        int n = sc.nextInt();
        long h = sc.nextLong();
        for(int i = 0; i < n; i++){
            ArrayList<Long> pl = getPrimeList(sc.nextLong());
            for(long l : pl){
                if(h % l == 0){
                    h /= l;
                }
            }
        }
        pw.println(h == 1 ? "YES" : "NO");
        pw.flush();
    }
    
    private static ArrayList<Long> getPrimeList(long l){
        ArrayList<Long> ret = new ArrayList<Long>();
        if(l < 2) return ret;
        ret.add(2L);
        for(long i = 3; i <= l; i += 2){
            boolean bool = true;
            for(long p : ret){
                if(i % p == 0){
                    bool = false;
                    break;
                }
            }
            if(bool) ret.add(i);
        }
        return ret;
    }
    
    static class GeekInteger {
        public static void save_sort(int[] array) {
            shuffle(array);
            Arrays.sort(array);
        }
 
        public static int[] shuffle(int[] array) {
            int n = array.length;
            Random random = new Random();
            for (int i = 0, j; i < n; i++) {
                j = i + random.nextInt(n - i);
                int randomElement = array[j];
                array[j] = array[i];
                array[i] = randomElement;
            }
            return array;
        }
    }
}

class Point implements Comparable<Point>{
    long a,b;
    public Point(long a){
        this.a = a;
    }
    
    public int compareTo(Point p){
        if(this.a < p.a){
            return -1;
        }else if(this.a > p.a){
            return 1;
        }else{
            return 0;
        }
    }
}

class FastScanner {
    private BufferedReader reader = null;
    private StringTokenizer tokenizer = null;
    public FastScanner(InputStream in) {
        reader = new BufferedReader(new InputStreamReader(in));
        tokenizer = null;
    }

    public String next() {
        if (tokenizer == null || !tokenizer.hasMoreTokens()) {
            try {
                tokenizer = new StringTokenizer(reader.readLine());
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return tokenizer.nextToken();
    }

    public String nextLine() {
        if (tokenizer == null || !tokenizer.hasMoreTokens()) {
            try {
                return reader.readLine();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
        return tokenizer.nextToken("\n");
    }

    public long nextLong() {
        return Long.parseLong(next());
    }

    public int nextInt() {
        return Integer.parseInt(next());
    }

    public double nextDouble() {
         return Double.parseDouble(next());
    }
    
    public String[] nextArray(int n) {
        String[] a = new String[n];
        for (int i = 0; i < n; i++)
            a[i] = next();
        return a;
    }

    public int[] nextIntArray(int n) {
        int[] a = new int[n];
        for (int i = 0; i < n; i++)
            a[i] = nextInt();
        return a;
    }

    public long[] nextLongArray(int n) {
        long[] a = new long[n];
        for (int i = 0; i < n; i++)
            a[i] = nextLong();
        return a;
    } 
}