program factoriale;
var v:array[1..100] of integer;
    ex,j,k,i,max:longint;
    min:array[1..10] of longint;

procedure citire;
var f:text;
    n,aux,x:longint;
    nr:longint;
begin
assign(f,'factoriale.in');
reset(f);
read(f,n,k);readln(f);
fillchar(v,sizeof(v),0);
for i:=1 to n do
begin
read(f,nr);
for x:=2 to nr do
begin
aux:=x;
  for j:=2 to x do
  begin
   while aux mod j=0 do
   begin
   aux:=aux div j;
   v[j]:=v[j]+1;
   end;
  if j>max then max:=j;
  if aux<=1 then
  break;
  end;
if aux = x then
v[x]:=v[x]+1;
if aux>max then
max:=x;
end;
end;
close(f);
end;

procedure afisare;
var g:text;
begin
assign(g,'factoriale.out');
rewrite(g);
case ex of
1:write(g,min[ex]);
2:write(g,min[1]*min[2]);
3:write(g,min[1]*min[2]*min[3]);
4:write(g,min[1]*min[2]*min[3]*min[4]);
5:write(g,min[1]*min[2]*min[3]*min[4]*min[5]);
6:write(g,min[1]*min[2]*min[3]*min[4]*min[5]*min[6]);
7:write(g,min[1]*min[2]*min[3]*min[4]*min[5]*min[6]*min[7]);
8:write(g,min[1]*min[2]*min[3]*min[4]*min[5]*min[6]*min[7]*min[8]);
9:write(g,min[1]*min[2]*min[3]*min[4]*min[5]*min[6]*min[7]*min[8]*min[9]);
10:write(g,min[1]*min[2]*min[3]*min[4]*min[5]*min[6]*min[7]*min[8]*min[9]*min[10]);
end;
close(g);
end;

begin
max:=0;min[1]:=1;
citire;ex:=1;
for i:=2 to max do
if v[i] mod k<>0 then
begin
for j:=v[i]+1 to ((v[i] div k)+1)*k do
if min[ex]*i>200000000 then
begin
ex:=ex+1;min[ex]:=1;
min[ex]:=min[ex]*i;
end else
min[ex]:=min[ex]*i;
end;
afisare;
end.