#include <bits/stdc++.h>

using i32 = int_fast32_t;
using i64 = int_fast64_t;
using u32 = uint_fast32_t;
using u64 = uint_fast64_t;
using f64 = double;
using f80 = long double;

#define FOR(v, a, b) for(i64 v = (a); v < (b); ++v)
#define FORE(v, a, b) for(i64 v = (a); v <= (b); ++v)
#define REP(v, n) FOR(v, 0, n)
#define REPE(v, n) FORE(v, 0, n)
#define REV(v, a, b) for(i64 v = (a); v >= (b); --v)
#define ALL(x) (x).begin(), (x).end()
#define RALL(x) (x).rbegin(), (x).rend()
#define ITR(it, c) for(auto it = (c).begin(); it != (c).end(); ++it)
#define RITR(it, c) for(auto it = (c).rbegin(); it != (c).rend(); ++it)
#define EXIST(c,x) ((c).find(x) != (c).end())
#define fst first
#define snd second
#define UNIQ(v) (v).erase(unique(ALL(v)), (v).end())
#define bit(i) (1LL<<(i))

#ifdef DEBUG
#include <Mylib/Debug/debug.cpp>
#else
#define dump(...) ((void)0)
#endif

using namespace std;

template <typename I> void join(ostream &ost, I s, I t, string d=" "){for(auto i=s; i!=t; ++i){if(i!=s)ost<<d; ost<<*i;}ost<<endl;}
template <typename T> istream& operator>>(istream &is, vector<T> &v){for(auto &a : v) is >> a; return is;}
template <typename T> void pout(const T &value){std::cout << value << "\n";}
template <typename T, typename ...Args> void pout(const T &value, const Args&... args){std::cout << value << " ";pout(args...);}

template <typename T, typename U> bool chmin(T &a, const U &b){return (a>b ? a=b, true : false);}
template <typename T, typename U> bool chmax(T &a, const U &b){return (a<b ? a=b, true : false);}
template <typename T, size_t N, typename U> void fill_array(T (&a)[N], const U &v){fill((U*)a, (U*)(a+N), v);}
template <typename T> auto make_vector(int n, int m, const T &value){return vector<vector<T>>(n, vector<T>(m, value));}


struct Init{
  Init(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(12);
    cerr << fixed << setprecision(12);
  }
}init;


template <int MAX>
struct EratosthenesSieve{
  static std::bitset<MAX+1> is_prime;
  
  static void init(){
    is_prime.flip();
    is_prime[0] = is_prime[1] = false;
    
    for(int i = 2; i <= MAX; ++i){
      if(is_prime[i]){
        for(int j = 2*i; j <= MAX; j += i){
          is_prime[j] = false;
        }
      }
    }
  }
};

template <int MAX> std::bitset<MAX+1> EratosthenesSieve<MAX>::is_prime;


using sieve = EratosthenesSieve<105000>;

int main(){
  sieve::init();

  vector<i64> a = {1};

  vector<i64> p;
  FORE(i,100001,100500){
    if(sieve::is_prime[i]){
      p.push_back(i);
    }
  }

  dump(p);

  for(auto &x : p){
    for(auto &y : p){
      if(x != y) a.push_back(x * y);
    }
  }

  sort(ALL(a));
  
  int N;

  while(cin >> N){
    i64 ans = a[N-1];

    cout << ans << "\n";
  }

  return 0;
}