The Felean number system is in base 8 (Octal) so only digits from 0-7. The actual symbols I haven't yet made. But their written forms I did. And basically it goes like

Nul, Yk, Kal, Nela, Vila, Kuls, Kahd, Yhk and with "10" being Kylme

These are kinda modified Finnish. With me modifying 0, 1, 2, 4, 5, 6, 8, 9 and 10

The "Teens" ("11-17", 9-15) are Ykkaa, Kalkaa, Nelkaa, Vilkaa, Kulkaa, Kahkaa, Yhkaa

For numbers like "20" (16) and forward it's

Kalyme, Nelyme, Vilyme Kulyme, Kahume, Yhyme

For "100" (64) it's saat and "1000" (512) it's tua

So number like 1426 (790) it's Tuavilasaatkalymekahd