CRM Case Number limitation

Hi All,

what is the maximum number of Cases that can be created using the out of the box Auto-numbering feature for Case entity in CRM 2011?

I have seen the following, but I didn't get the correct answer.

http://social.microsoft.com/Forums/en-US/6bdc0358-8235-42ce-a528-d8ebd333312f/case-numbers-limitation-in-crm-4?forum=crm

Thanks in advance.

Regards,

CRM Novice User