U+2057 "⁗" Quadruple Prime Unicode Character
Unicode Version 17.0
⁗
U+2057 "⁗" Quadruple Prime is a typographic symbol used primarily in mathematical notation and phonetics to denote a fourth order of differentiation, a quadruple prime mark after a variable, or a distinct level of stress or length in linguistic transcription. It belongs to the General Punctuation block and is a less common relative of the single, double, and triple prime marks, often appearing in specialized academic or technical texts where multiple levels of notation are required without switching to subscript numerals. This character helps maintain visual clarity and consistency in complex equations or phonetic descriptions, though its usage is rare outside of formal publishing and scientific writing.
General Properties
| Code Point | U+2057 |
| Version Added | 3.2 |
| Name | Quadruple Prime |
| Block | General Punctuation |
| General Category | Other Punctuation |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
| Decomposition Type | Compat |
| Decomposition Mapping | "′" U+2032 Prime "′" U+2032 Prime "′" U+2032 Prime "′" U+2032 Prime |
Encodings
| HTML Decimal Encoding | ⁗ |
| HTML Hex Encoding | ⁗ |
| UTF-8 Encoding | 0xE2 0x81 0x97 |
| UTF-16 Encoding | 0x2057 |
| UTF-32 Encoding | 0x00002057 |
| C/C++/Java Escape | \u2057 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Postfix Numeric |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "′" U+2032 Prime "′" U+2032 Prime "′" U+2032 Prime "′" U+2032 Prime |
| NFKC Simple Casefold | "′" U+2032 Prime "′" U+2032 Prime "′" U+2032 Prime "′" U+2032 Prime |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |