U+1D7ED "𝟭" Mathematical Sans-Serif Bold Digit One Unicode Character

Unicode Version 17.0

𝟭

U+1D7ED "𝟭" Mathematical Sans-Serif Bold Digit One is a stylized numeral one belonging to the Mathematical Alphanumeric Symbols block, designed for use in mathematical and scientific notation where a clear, bold sans-serif appearance is required to distinguish digits from surrounding text or to match a specific typographic style. It represents the decimal digit one with a modern, clean aesthetic, lacking the serifs and often the weight variations of traditional typefaces, making it suitable for equations, variable expressions, and formal documents that demand precise visual differentiation. This character is encoded to ensure consistent rendering across digital platforms, preventing reliance on font substitution that could disrupt the intended meaning in technical or academic contexts.

General Properties

Code Point U+1D7ED
Version Added 3.1
Name Mathematical Sans-Serif Bold Digit One
Block Mathematical Alphanumeric Symbols
General Category Decimal Number
Canonical Combining Class Not Reordered
Bidirectional Class European Number
Decomposition Type Font
Decomposition Mapping "1" U+0031 Digit One

Encodings

HTML Decimal Encoding 𝟭
HTML Hex Encoding 𝟭
UTF-8 Encoding 0xF0 0x9D 0x9F 0xAD
UTF-16 Encoding 0xD835 0xDFED
UTF-32 Encoding 0x0001D7ED
C/C++/Java Escape \ud835\udfed

Unicode Properties

NFC Quick Check Yes
NFD Quick Check Yes
Numeric Type Decimal
Numeric Value 1
Line Break Numeric
Changes When NFKC Casefolded Yes
NFKC Casefold "1" U+0031 Digit One
NFKC Simple Casefold "1" U+0031 Digit One
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