#include<bits/stdc++.h>
#define ll long long//宏定义
using namespace std;
ll gcd(ll a,ll b){//两个数的大公约
while( 1 ){
ll r=a%b;
if(r==0)
break;
a=b; b=r;
}
return b;
}

ll lcm(ll a,ll b){return a/gcd(a,b)*b;}//公倍
ll qscanf(){//快读
ll x=0,f=1;
char ch=getchar();
while((ch<'0'||ch>'9')){
if(ch=='-') f=-1;
ch = getchar();
}
while((ch>='0'&&ch<='9')){
x=x*10+ch-'0';
ch = getchar();
}
return x*f;
}
int main(){
ll n;n=qscanf();
ll a[n];
a[0]=qscanf();a[1]=qscanf();
ll x=lcm(a[0],a[1]);
for(int i=2;i<n;i++){//读进来就判断
a[i]=qscanf();
x=lcm(x,a[i]);
}
cout<<x;
return 0;
}