var
  n,m,i,j : int64;
  a : array [1..1000] of int64;
begin
  readln(n,m);
  for i:=1 to n do read(a[i]);
  for i:=1 to n-1 do
    for j:=m+1 to 1000000 do
    if j mod a[i]=0 then
      begin
        m:=j;
        break;
      end;
  writeln(m+1);
end.