#include<iostream>
#include<stdio.h>
#include<algorithm> 
#include<string.h>
#include <iomanip>
#include<math.h>
using namespace std;

int GCD(int num1, int num2)
{
    if (num1%num2 == 0)
        return num2;
    else return  GCD(num2, num1%num2);
}
int LCM(int a, int b)
{
    int temp_lcm;
    temp_lcm = a / GCD(a, b)*b; //先除后乘，否则数据溢出导致WA
    return temp_lcm;
}

int main() {
    //数据组数
    int n = 0;
    while (cin >> n) {
        while (n--) {
            //变量数
            int k = 0;
            cin >> k;
            //将变量初始化
            int b = 0;
            int lcm, a = 1;
            for (int i = 0; i < k; i++) {
                //将每次输入的变量设置为b，计算a与b的LCM，随后将LCM赋值给a
                cin >> b;
                lcm = LCM(a, b);
                a = lcm;
            }
            cout << lcm << endl;
        }
    }
}