Use smaller than on like clause

I have some number like

12000
13093
14013
14111
15543
16883
17932
18920
19903
20390

These numbers are only an example I have a lot of 14… a lot of 15… etc.

Now in WHERE clause of a stored procedure, I want to exclude all numbers who start with 15 or less

so I can do something like:

WHERE TestColumn NOT LIKE '15%' AND TestColumn NOT LIKE '14%'

Is there a way to change this and use something like TestColumn NOT LIKE < '15%'

Answer

If the value of TestColumn is a string you could use a cast to integer of the two leftmost chars

    WHERE cast(left(TestColumn,2) as int) <=15   

and for what in your comment

    WHERE cast(left(TestColumn,2) as int) <=15  
    and cast(lTestColumn as int) <>13093