#include <bits/stdc++.h>

using namespace std;

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  freopen("bai1.inp", "r", stdin);

  int min_gcd, n;
  cin >> n >> min_gcd;
  n--;
  int prod = n;
  while (n--) {
    int x;
    cin >> x;
    min_gcd = lcm(min_gcd, x);
  }
  cout << min_gcd << '\n';
}