U+10858 Imperial Aramaic Number One
U+10858 was added in Unicode version 5.2 in 2009. It belongs to the block
This character is a Other Number and is mainly used in the Imperial Aramaic script. The codepoint has the numeric value 1.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from right to left. When changing direction it is not mirrored. The word that U+10858 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of unit length is a line segment of length 1. In conventions of sign where zero is considered neither positive nor negative, 1 is the first and smallest positive integer. It is also sometimes considered the first of the infinite sequence of natural numbers, followed by 2, although by other definitions 1 is the second natural number, following 0.
The fundamental mathematical property of 1 is to be a multiplicative identity, meaning that any number multiplied by 1 equals the same number. Most if not all properties of 1 can be deduced from this. In advanced mathematics, a multiplicative identity is often denoted 1, even if it is not a number. 1 is by convention not considered a prime number; this was not universally accepted until the mid20th century. Additionally, 1 is the smallest possible difference between two distinct natural numbers.
The unique mathematical properties of the number have led to its unique uses in other fields, ranging from science to sports. It commonly denotes the first, leading, or top thing in a group.
Representations
System  Representation 

Nº  67672 
UTF8  F0 90 A1 98 
UTF16  D8 02 DC 58 
UTF32  00 01 08 58 
URLQuoted  %F0%90%A1%98 
HTML hex reference  𐡘 
Wrong windows1252 Mojibake  ð¡˜ 
Elsewhere
Complete Record
Property  Value 

5.2 (2009)  
IMPERIAL ARAMAIC NUMBER ONE  
—  
Imperial Aramaic  
Other Number  
Imperial Aramaic  
Right To Left  
Not Reordered  
none  


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