#include<bits/stdc++.h>
using namespace std;
int m,n,maxn,cmt;
int zhishu(int x)
{
	cmt=0;
	for(int j=2;j<=sqrt(x);j++)
		if(x%j==0)
			cmt++;
	int cnt=cmt;
	cmt=0;
	if(cnt==0)return 1;
	else return 0;
}
int yinzi(int x)
{
	maxn=0;
	for(int j=1;j<=x;j++)
	{
		if(x%j==0)
		{
			zhishu(j);
		}
		if(zhishu(j)==1)
			maxn=max(maxn,j);
	}
	int mx=maxn;
	maxn=0;
	return mx;
}
int main()
{
	cin>>m>>n;
	for(int i=m;i<=n;i++)
	{
		if(i<n)
		{
			cout<<yinzi(i)<<",";
		}
		else cout<<yinzi(i);
	}
	return 0;
}