customize bug number format

I have started a new project, and the bug IDs are simple: 1, 2 3, 4, etc. I would rather customize the format and give the bug number some alpha characters too so that I can identify the project in the number ID. For example maybe the bug is for my product called "ABC". I would like the bug number to contain "ABC" and then have the numbers padded to three digits. So the bug ID could be called "ABC001" or "ABC_001".