U+1D7F0 "𝟰" Mathematical Sans-Serif Bold Digit Four Unicode Character
Unicode Version 17.0
𝟰
U+1D7F0 "𝟰" Mathematical Sans-Serif Bold Digit Four is a stylized numeric symbol from the Mathematical Alphanumeric Symbols block, designed for use in mathematical notation and technical text where a bold, sans-serif appearance is required. It represents the digit four in a clean, thick stroke style that helps differentiate it from standard digits, often employed in equations, formulas, or documentation to indicate vector quantities, matrix indices, or other specialized mathematical contexts. This character ensures consistent formatting across digital platforms without relying on font-dependent styling, such as bolding a regular digit.
General Properties
| Code Point | U+1D7F0 |
| Version Added | 3.1 |
| Name | Mathematical Sans-Serif Bold Digit Four |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Decimal Number |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | European Number |
| Decomposition Type | Font |
| Decomposition Mapping | "4" U+0034 Digit Four |
Encodings
| HTML Decimal Encoding | 𝟰 |
| HTML Hex Encoding | 𝟰 |
| UTF-8 Encoding | 0xF0 0x9D 0x9F 0xB0 |
| UTF-16 Encoding | 0xD835 0xDFF0 |
| UTF-32 Encoding | 0x0001D7F0 |
| C/C++/Java Escape | \ud835\udff0 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | Decimal |
| Numeric Value | 4 |
| Line Break | Numeric |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "4" U+0034 Digit Four |
| NFKC Simple Casefold | "4" U+0034 Digit Four |
| 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 |