Armenian numerals

As in Hebrew and ancient notation, in Armenian numerals distinct symbols represent multiples of powers of 10, from 1 to 9, 10 to 90, 100 to 900, 1,000 to 9,000, and 10,000 and 20,000. A number is written from left to right, composed from at most one of these symbols for each power of 10, arranged in descending order by magnitude. There is no symbol for zero: for a number like 600 or 9,007, missing powers of ten are simply not represented. To write numbers greater than 9,999, it is necessary to have numerals with values greater than 9,000. This is done by drawing a line over them, indicating that their value is to be multiplied by 10,000. This is similar to Roman numerals, where a line over a character means multiplying the corresponding value by 1,000. ==Examples==

• . = 1975 = 1000 + 900 + 70 + 5 • . = 2222 = 2000 + 200 + 20 + 2 • . = 120 = 100 + 20 • . = 2004 = 2000 + 4 • . = 50 • Ա. = 10,000 = 1 10,000 • Ջ. = 9,000,000 = 900 10,000 • ՌՃԽԳ. = 11,431,255 = 1,143 10,000 + 1,255 ==Shirakatsi notation==

In the 7th century, Anania Shirakatsi developed a unique numerical notation derived from the older Armenian alphabetic system using just 12 letters to express any number up to 10,000. For the units, he used the first nine letters (Ա, Բ, Գ, Դ, Ե, Զ, Է, Ը, Թ), similar to the traditional system. The letters used for 10, 100, and 1000 were also identical to the traditional Armenian system (Ժ, Ճ, Ռ), but all other numbers up to 10,000 were written with these 12 letters. For instance, 50 would be written ԵԺ (5×10) and not Ծ as in the standard system. Thus, the notation is multiplicative-additive as opposed to the ciphered-additive standard system. == References ==