RT 4.24 - What happens after 999,999 ticket count

We have been using RT which was integrated into Freeside since 2012. The current version we are running is 4.24. We are currently around 700,000 tickets and project we will hit 1 Million tickets within a couple years. Our question is what happens when we hit 1 million. Was the database created to handle that many tickets? I feel like it is Y2K all over again by asking this question. Thank you for your help!

Fortunately it just keeps trucking.
Watch out for locally written scripts that parse the ticket number.
We gave out a T-shirt for the first human generated ticket over 1000000.