#include<stdio.h>

int gcd(int a,int b);

int main()

{

    int n,m,a,b,i,sum;//sum是最小公倍数

    scanf("%d",&n);

       while(n--)

       {

              scanf("%d",&m);

              sum=1;//sum=1

              for(i=1;i<=m;i++)

              {

                scanf("%d",&b);

                sum=sum/gcd(sum,b)*b;

               }

               printf("%d\n",sum);

       }

     return 0;

}

int gcd(int a,int b)

{

    int temp;

    while(a%b)

    {

      temp=b;

      b=a%b;

      a=temp;  

    }

    return b;

}