/**1967 cmmdc0*/
#include <iostream>
#include <fstream>

using namespace std;

ifstream fin("cmmdc0.in");
ofstream fout("cmmdc0.out");

int main()
{
    
    int n, i, x[10000], d[10000], a, b, r, cmmmc;
    fin>>n;
    for(i=0; i<n; i++)
        fin>>x[i]>>d[i];
    cmmmc=d[0];
    for(i=1; i<n; i++)
    {
        a=cmmmc;
        b=d[i];
        while(b>0)
        {
            r=a%b;
            a=b;
            b=r;
        }

        cmmmc=cmmmc*(d[i]/a);
    }
    fout<<cmmmc;
    return 0;
}