#include <bits/stdc++.h>
using namespace std;
using ll=long long;
int main(){
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	ll n,p;
	cin>>n>>p;
	if(p==2){
		if(n%2==0)cout<<"No"<<endl;
		else cout<<"Yes"<<endl;
	}else{
		if((n+1)%p==0)cout<<"Yes"<<endl;
		else if((n+1)%(p-1)==0||gcd(p-1,(n+1))!=1)cout<<"Yes"<<endl;
		else cout<<"No"<<endl;
	}
}