How can I count the digits in an integer without a string cast?

Question

I fear there\'s a simple and obvious answer to this question. I need to determine how many digits wide a count of items is, so that I can pad each item number with the m

Answer 1

I would have posted a comment but my rep score won't grant me that distinction.

All I wanted to point out was that even though the Log(10) is a very elegant (read: very few lines of code) solution, it is probably the one most taxing on the processor.

I think jherico's answer is probably the most efficient solution and therefore should be rewarded as such.

Especially if you are going to be doing this for a lot of numbers..