Stack Exchange network consists of 178 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
View all activity pages
I found a similar question, where this is suggested by user CapnPrep as a possible answer:
Octodecim and novendecim/novemdecim do exist, although they are not
the preferred forms in Classical Latin. ...