U+F9D1 "六" CJK Compatibility Ideograph-# Unicode Character

Unicode Version 17.0

U+F9D1 "六" CJK Compatibility Ideograph-# is a compatibility ideograph from the CJK Compatibility block, representing a variant form of the Chinese character for “six” (the standard character being U+516D or 六). This code point was primarily included for roundtrip compatibility with older East Asian character encoding standards, such as certain Japanese and Korean systems, where duplicated or slightly stylized forms of common characters were mapped to unique values. As a compatibility character, it is not intended for general use in modern text; instead, standard Unicode recommends using the unified CJK character for “six” when encoding the number, reserving U+F9D1 for historical or legacy data conversion purposes. Its visual appearance is identical or nearly identical to the standard character, and its inclusion ensures that text encoded in older systems can be accurately transformed to and from Unicode without losing information.

General Properties

Code Point U+F9D1
Version Added 1.1
Name CJK Compatibility Ideograph-#
Block CJK Compatibility Ideographs
General Category Other Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Canonical
Decomposition Mapping "六" U+516D CJK Unified Ideograph-#

Encodings

HTML Decimal Encoding 六
HTML Hex Encoding 六
UTF-8 Encoding 0xEF 0xA7 0x91
UTF-16 Encoding 0xF9D1
UTF-32 Encoding 0x0000F9D1
C/C++/Java Escape \uf9d1

Unicode Properties

Full Composition Exclusion Yes
Numeric Type Numeric
Numeric Value 6
Line Break Ideographic
East Asian Width Wide
Changes When NFKC Casefolded Yes
NFKC Casefold "六" U+516D CJK Unified Ideograph-#
NFKC Simple Casefold "六" U+516D CJK Unified Ideograph-#
Script Han
Script Extensions Han
Indic Syllabic Category Other
ID Start Yes
XID Start Yes
ID Continue Yes
XID Continue Yes
Alphabetic Yes
Vertical Orientation Upright
Grapheme Base Yes
Grapheme Cluster Break Other
Word Break Other
Sentence Break OLetter
Ideographic Yes

Unihan Properties

kCompatibilityVariant U+516D
kDefinition number six
kHangul 육:0
kIRG_KSource K0-6B3B
kKorean YUK
kRSUnicode 12.2
kTotalStrokes 4