#include "stdio.h"
int leastCommon(int a,int b)
{
   if(b==0) return a;
   return leastCommon(b,a%b);
}
int main()
{
    int n,m,t1,t2;
    while(scanf("%d",&n)!=-1)
    {
        while(n--)
        {
            scanf("%d",&m);
            scanf("%d",&t1);
            m--;
            while(m--)
            {
                scanf("%d",&t2);
                t1=t1/leastCommon(t1,t2)*t2;
            }
            printf("%d\n", t1);
        }
     
    }
}