#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
#define S(a) scanf("%d",&a)
#define LS(a) scanf("%lld",&a)

int main() {

    ll n, k;
    LS(n), LS(k);

    if (k >= 60) {
        printf("No\n");
    } else {
        // brute force as k < 60
        bool ans = 1;
        set<ll> st;
        for (ll i = 1; i <= k; ++i) {
            if (st.find(n % i) != st.end()) {
                ans = 0;
                break;
            }
            st.insert(n % i);

        }
        if (ans) {
            printf("Yes\n");
        } else {
            printf("No\n");
        }

    }


    return 0;
}
//
// Created by sourav on 7/2/18.
//