The moment I read the topic of this thread, I was instantly reminded of Vikidal Gyula's epic '24601!'
I've read a joke somewhere that Prisoners 24600 and 24602 would be feeling extremely neglected because of Valjean!!
And the first time I heard the 25th Anniversary Madrid cast, I was like,"Why has the Prisoner number been changed???" Although my Spanish knowledge is next to nothing, I can count up to 10 in Spanish, and I was like,"Dos-Tres...what?!?"
But it's interesting to know that there is NO hard & fast rule about the Prisoner number in other languages.
In English (at least), how does "Two-Four-Six-Zero
-One' sound to you??