#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<ll, ll>;
const ll linf = 1e18;
const double eps = 1e-12, pi = acos(-1);
template <typename Head>
void out(Head h) {
  cout << h << endl;
}
template <typename Head, typename... Tail>
void out(Head h, Tail... t) {
  cout << h << " ";
  out(t...);
}
template <typename T>
istream& operator>>(istream& is, vector<T>& v) {
  for (auto&& x : v) is >> x;
  return is;
}
template <typename T>
ostream& operator<<(ostream& os, const vector<T>& v) {
  for (ll i = (0), __last_i = (v.size()); i < __last_i; i++) {
    if (i) os << " ";
    os << v[i];
  }
  return os;
}
template <typename T>
ostream& operator<<(ostream& os, const vector<string>& v) {
  for (ll i = (0), __last_i = (v.size()); i < __last_i; i++) {
    if (i) os << endl;
    os << v[i];
  }
  return os;
}
template <typename T>
ostream& operator<<(ostream& os, const vector<vector<T>>& v) {
  for (ll i = (0), __last_i = (v.size()); i < __last_i; i++) {
    if (i) os << endl;
    os << v[i];
  }
  return os;
}
struct yes_no : std::numpunct<char> {
  string_type do_truename() const { return "Yes"; }
  string_type do_falsename() const { return "No"; }
};
void solve();
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  locale loc(locale(), new yes_no);
  cout.imbue(loc);
  cout << fixed << setprecision(10) << boolalpha;
  solve();
}
ll gcd(ll a, ll b) { return b == 0 ? a : gcd(b, a % b); }
ll lcm(ll a, ll b) { return a / gcd(a, b) * b; }
void solve() {
  ll n;
  cin >> n;
  vector<ll> a(n);
  cin >> a;
  ll x = *min_element(begin(a), end(a));
  ll ans = 1;
  for (ll i = (0), __last_i = (n); i < __last_i; i++) {
    ans = gcd(x, ans * a[i]);
  }
  cout << ans << endl;
}
