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Coptic Epact Numbers is a Unicode block containing old Coptic number forms. These numbers were used in some regions instead of letters of the
Coptic alphabet The Coptic alphabet is the script used for writing the Coptic language. The repertoire of glyphs is based on the Greek alphabet augmented by letters borrowed from the Egyptian Demotic and is the first alphabetic script used for the Egyptian la ...
that were used for encoding numbers, as was common in much of the world at the time, like Roman numerals. It was used most extensively in the Bohairic dialect of the
Coptic language Coptic (Bohairic Coptic: , ) is a language family of closely related dialects, representing the most recent developments of the Egyptian language, and historically spoken by the Copts, starting from the third-century AD in Roman Egypt. Copti ...
that became the liturgical language of Egyptian Christians. It contains separate characters for each of the digits, 1-9 (0 was not indicated), each of the tens numbers from 10-90, and each of the hundreds numbers from 100-900. Numbers were composed from left-to-right by successively adding the values that each character or digit represented. There is a thousand mark diacritic that multiplies the digit by one thousand (so 5 with thousand mark = 5,000, 900 with thousand mark indicates 900,000) Two of the thousands marks together (visually similar to a tanween al-kasra in Arabic) represents a million in a similar fashion, and mirrors other Coptic conventions of indicating higher orders by repetition of marks.


History

The following Unicode-related documents record the purpose and process of defining specific characters in the Coptic Epact Numbers block:


References

{{reflist Unicode blocks