var c,a,b,i,j,l:integer;
begin
 cls;

 write('Введите через пробел отрезок');
 read(a,b);
  for i:=a to b+1 do
  begin
   j:=2;
   l:=round(sqrt(i));
   while (i mod j <> 0) and (j <= l) do
                                       begin
                                        inc(j);
                                       end;
    if (j > l) then
                   begin
                    write(c,' ');
                    c:=i;
                   end;
  end;
end.