What 𐹶 means
They grew from Coptic numeral forms.
An early surviving mention of rūmī (“Roman”) signs is in mathematician al-Uqlīdisī’s treatise (952–953 CE). Used across Egypt, the Maghreb and al-Andalus from the 10th–17th centuries, they also appear in Mozarabic (Iberian Christian) and Toledo manuscripts (12th–13th centuries), and Moroccan legal or commercial records through about the 17th century.
Uses included pages, chapters, quires (folded-sheet bundles), accounts, math, science and astronomy. Coptic numerals use letters as numbers; Rumi values add together, unlike abjad (Arabic letters used as numbers) or siyaq (account notation). A link to Egyptian zimām account numerals is possible but uncertain. Forms varied; fonts need not match: Unicode 17.0’s chart follows one manuscript model linked to mathematician Ibn al-Bannāʾ.
Don't confuse it with
4Questions people ask
1Why does 𐹶 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type 𐹶
𐹶\10E76Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.