The Ottoman Siyaq Numbers block spans U+1ED00–U+1ED4F, 80 codepoints in Plane 1 (Supplementary Multilingual Plane). 61 are assigned in Unicode 16.0; the other 19 are reserved for future characters.
All of its characters have the script value Common: they are shared across writing systems rather than tied to one.
By general category: 60 other numbers (No), 1 other symbols (So).
The first 61 arrived in Unicode 12.0 (2019).
Most letters here are written right to left. See bidirectional text.
Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.