U+1D7D5 "𝟕" Mathematical Bold Digit Seven Unicode Character

Unicode Version 17.0

𝟕

U+1D7D5 "𝟕" Mathematical Bold Digit Seven is a typographic variant of the Arabic numeral seven, designed with a heavier, thicker stroke weight to provide visual emphasis in mathematical and scientific notation. It belongs to the Mathematical Alphanumeric Symbols block, which was created to allow distinct formatting for variables, constants, and digits in plain text without relying on font styling. This specific character is intended for use in equations, formal proofs, and technical documents where a bold numeral helps differentiate the digit seven from surrounding text or from similar symbols like the number one. Its inclusion in Unicode ensures that the bold seven remains consistently represented across different platforms, software, and fonts, preserving the intended formatting of complex mathematical expressions.

General Properties

Code Point U+1D7D5
Version Added 3.1
Name Mathematical Bold Digit Seven
Block Mathematical Alphanumeric Symbols
General Category Decimal Number
Canonical Combining Class Not Reordered
Bidirectional Class European Number
Decomposition Type Font
Decomposition Mapping "7" U+0037 Digit Seven

Encodings

HTML Decimal Encoding 𝟕
HTML Hex Encoding 𝟕
UTF-8 Encoding 0xF0 0x9D 0x9F 0x95
UTF-16 Encoding 0xD835 0xDFD5
UTF-32 Encoding 0x0001D7D5
C/C++/Java Escape \ud835\udfd5

Unicode Properties

NFC Quick Check Yes
NFD Quick Check Yes
Numeric Type Decimal
Numeric Value 7
Line Break Numeric
Changes When NFKC Casefolded Yes
NFKC Casefold "7" U+0037 Digit Seven
NFKC Simple Casefold "7" U+0037 Digit Seven
Script Common
Script Extensions Common
Indic Syllabic Category Other
ID Continue Yes
XID Continue Yes
Math Yes
Other Math Yes
Vertical Orientation Rotated
Grapheme Base Yes
Grapheme Cluster Break Other
Word Break Numeric
Sentence Break Numeric