Home U+2150 to U+218F Number Forms
Glyph for U+2170
Source: Noto Sans Symbols

U+2170 Small Roman Numeral One

U+2170 was added to Unicode in version 1.1 (1993). It belongs to the block U+2150 to U+218F Number Forms in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Letter Number and is mainly used in the Latin script. The codepoint has the Numeric value 1. It is related to its uppercase variant Glyph for U+2160 Roman Numeral One and its titlecase variant Glyph for U+2160 Roman Numeral One.

The glyph is a Compat composition of the glyph Glyph for U+0069 Latin Small Letter I. It has a Ambiguous East Asian Width. In bidirectional context it acts as Left To Right and is not mirrored. The glyph can, under circumstances, be confused with 1 other glyphs. In text U+2170 behaves as Ambiguous (Alphabetic or Ideographic) regarding line breaks. It has type Lower for sentence and Alphabetic Letter for word breaks. The Grapheme Cluster Break is Any.

The Wikipedia has the following information about this codepoint:

1 (one, also called unit, and unity) is a number and a numerical digit used to represent that number in numerals. It represents a single entity, the 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; although universally accepted today, this fact was controversial until the mid-20th century.

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
8560
UTF-8 E2 85 B0
UTF-16 21 70
UTF-32 00 00 21 70
URL-Quoted %E2%85%B0
HTML-Escape ⅰ
Wrong windows-1252 Mojibake ⅰ
Encoding: EUC-KR (hex bytes) A5 A1
Encoding: JIS0208 (hex bytes) FC F1
Encoding: JIS0208 (hex bytes) 113 A1
Adobe Glyph List oneroman
digraph 1r

Related Characters

Confusables

Elsewhere

Complete Record

Property Value
Age 1.1 (1993)
Unicode Name SMALL ROMAN NUMERAL ONE
Unicode 1 Name
Block Number Forms
General Category Letter Number
Script Latin
Bidirectional Category Left To Right
Combining Class Not Reordered
Decomposition Type Compat
Decomposition Mapping Glyph for U+0069 Latin Small Letter I
Lowercase
Simple Lowercase Mapping Glyph for U+2170 Small Roman Numeral One
Lowercase Mapping Glyph for U+2170 Small Roman Numeral One
Uppercase
Simple Uppercase Mapping Glyph for U+2160 Roman Numeral One
Uppercase Mapping Glyph for U+2160 Roman Numeral One
Simple Titlecase Mapping Glyph for U+2160 Roman Numeral One
Titlecase Mapping Glyph for U+2160 Roman Numeral One
Case Folding Glyph for U+2170 Small Roman Numeral One
ASCII Hex Digit
Alphabetic
Bidi Control
Bidi Mirrored
Composition Exclusion
Case Ignorable
Changes When Casefolded
Changes When Casemapped
Changes When NFKC Casefolded
Changes When Lowercased
Changes When Titlecased
Changes When Uppercased
Cased
Full Composition Exclusion
Default Ignorable Code Point
Dash
Deprecated
Diacritic
Emoji Modifier Base
Emoji Component
Emoji Modifier
Emoji Presentation
Emoji
Extender
Extended Pictographic
FC NFKC Closure Glyph for U+2170 Small Roman Numeral One
Grapheme Cluster Break Any
Grapheme Base
Grapheme Extend
Grapheme Link
Hex Digit
Hyphen
ID Continue
ID Start
IDS Binary Operator
IDS Trinary Operator and
Ideographic
Indic Mantra Category
Indic Positional Category NA
Indic Syllabic Category Other
Jamo Short Name
Join Control
Logical Order Exception
Math
Noncharacter Code Point
NFC Quick Check Yes
NFD Quick Check Yes
NFKC Casefold Glyph for U+0069 Latin Small Letter I
NFKC Quick Check No
NFKD Quick Check No
Other Alphabetic
Other Default Ignorable Code Point
Other Grapheme Extend
Other ID Continue
Other ID Start
Other Lowercase
Other Math
Other Uppercase
Prepended Concatenation Mark
Pattern Syntax
Pattern White Space
Quotation Mark
Regional Indicator
Radical
Sentence Break Lower
Soft Dotted
Sentence Terminal
Terminal Punctuation
Unified Ideograph
Variation Selector
Word Break Alphabetic Letter
White Space
XID Continue
XID Start
Expands On NFC
Expands On NFD
Expands On NFKC
Expands On NFKD
Bidi Paired Bracket Glyph for U+2170 Small Roman Numeral One
Bidi Paired Bracket Type None
East Asian Width Ambiguous
Hangul Syllable Type Not Applicable
ISO 10646 Comment
Joining Group No_Joining_Group
Joining Type Non Joining
Line Break Ambiguous (Alphabetic or Ideographic)
Numeric Type Numeric
Numeric Value 1
Simple Case Folding Glyph for U+2170 Small Roman Numeral One
Script Extension
Vertical Orientation U