#include <iostream>
 
using namespace std;
 
unsigned long long int nwd(unsigned long long int a,unsigned long long int b)
{
    if(b!=0)
    return nwd(b, a%b);
    return a;
 
}
unsigned long long int nww(unsigned long long int a,unsigned long long int b)
{
    return a*b/nwd(a,b);
}
 
 
int main()
{
    unsigned long long int testy;
    cin>>testy;
    for(int i=0; i<testy; i++)
    {
        unsigned long long int a;
        cin>>a;
        unsigned long long int *tab;
        tab = new unsigned long long int [a];
        for(int j=0; j<a; j++)
        {
            cin>>tab[j];
        }
        tab[1]=nww(tab[0],tab[1]);
        for(int q=2; q<a; q++)
        {
            tab[q]=nww(tab[q],tab[q-1]);
        }
        cout<<tab[a-1]<<endl;
        delete [] tab;
}
    return 0;
}
 

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