Fillitas of Ponylon was an early pony philosopher and mathemetician, a near-contemporary of Aristrottle. She flourished some time around 600-500 BE. She is claimed by classical historians of all three Pony tribes but was probably an Earth Pony.
Fillitas is said to have reformed the system of pony numeracy, creating a base-thirty positional number system, allegedly by multiplying the first four prime numbers.