The number system in the language is based upon the number 6 that is seen as a sacred number in Cie'leth culture.
Number higher than 6 are expressed as the base number and indicator number combined together with ciaem. For example, the number 7 is expressed as Havor-ciaem-rimae while the number 17 is havor-ciaem-havor.
This makes no sense to me. I can kind of see havor-ciaem-rimae as adding up to 7 if what you have is actually base 5 with the ones column preceding (i.e. "two and one [five]" = seven). But applying the same logic to havor-ciaem-havor should yield twelve, not seventeen (i.e. "two and two [fives]" = twelve). Moreover, since 17 is prime, I can't find any way of deriving it from the sum of two multiples of two.
Well, again, like I said, it might seem complex but when you actually think about it, it does make some sense. The number 6 is simply havor-ciaem without the indicator number which should be the zero while 16 is havor-ciaem-tir with tir pronounced without the R at the end.