#include <bits/stdc++.h>
#define int long long
using namespace std;
typedef pair<int,int> pii;
int s=8100178706957568;
int check(int x)
{
    int ss=s;
    while(ss)
    {
        if(ss%x>=10) return 0;
        ss/=x;
    }
    return 1;
}
void solve()
{
  for(int i=11;i<=36;i++)
  {
      if(check(i))
      {
          cout<<i;
      }
  }
}
signed main()
{
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int t;
  t=1;
  // cin>>t;
  while(t--)
  {
    solve();
  }
  return 0;
}