nww2

#include <iostream>
unsigned long long nwd(unsigned long long a, unsigned long long b)
{
    unsigned long long c;
    while(b != 0)
    {
        c=a % b;
        a = b;
        b = c;
    }
    return a;
}
unsigned long long NWW(int a, int b)
{return (a/nwd(a,b)*b);}
int main()
{
unsigned long long t,ak,w,buf;
std::cin>>t;
for(long long i = 0; i < t; i++)
{
std::cin>>ak>>w;
for(long long j = 0; j < ak-1; j++)
{
std::cin>>buf;
w = NWW(w, buf);
}
std::cout<<w<<"\n";
}
return 0;
}