Is there a simple way to handle base 13 (or generic base N)?

I can quickly knock together soem code to xlat开发者_运维技巧e base 10 to/from bae 13, but I just wondered if something very easy already exists in VB.NET (or even somethign generic, with base N, but right now I am only looking at base 13)

Nothing easy already exists in VB.NET.