π is the Unicode character GREEK TRYBLION BASE SIGN, code point U+10189 (decimal 65929) in the Ancient Greek Numbers block, added in Unicode 4.1. In HTML write 𐆉, and in UTF-8 it is the 4 bytes F0 90 86 89.
Codes
| Where | How to write it |
|---|---|
| Code point | U+10189 |
| Decimal | 65929 |
| UTF-8 bytes | F0 90 86 89 |
| UTF-16 (big-endian) | D800 DD89 |
| UTF-32 | 00010189 |
| HTML decimal | 𐆉 |
| HTML hex | 𐆉 |
| CSS | \10189 |
| JavaScript | \u{10189} or \uD800\uDD89 |
| JSON | \uD800\uDD89 |
| Python | \U00010189 |
| Python by name | \N{GREEK TRYBLION BASE SIGN} |
| Java, C# | \uD800\uDD89 |
| Rust, Swift | \u{10189} |
| Go, C, C++ | \U00010189 |
| URL (percent-encoded) | %F0%90%86%89 |
JavaScript and JSON strings store text as UTF-16, so this character takes two code units (a surrogate pair) and "π".length is 2. Python 3 strings count code points, so its length there is 1.
Properties
| Property | Value |
|---|---|
| Name | GREEK TRYBLION BASE SIGN |
| Code point | U+10189 (decimal 65929) |
| Block | Ancient Greek Numbers (U+10140βU+1018F) |
| General category | So: Other symbol |
| Script | Greek |
| Bidirectional class | ON: Other neutral |
| Mirrored in right-to-left text | No |
| First in Unicode version | 4.1 |
Nearby in Ancient Greek Numbers
- π U+10181 Greek Metretes Sign
- π U+10182 Greek Kyathos Base Sign
- π U+10183 Greek Litra Sign
- π U+10184 Greek Ounkia Sign
- π U+10185 Greek Xestes Sign
- π U+10186 Greek Artabe Sign
- π U+10187 Greek Aroura Sign
- π U+10188 Greek Gramma Sign
- π U+1018A Greek Zero Sign
- π U+1018B Greek One Quarter Sign
- π U+1018C Greek Sinusoid Sign
- π U+1018D Greek Indiction Sign
- π U+1018E Nomisma Sign
All 79 characters: Ancient Greek Numbers.
Official reference
Questions people ask
- What is the HTML code for π?
- Use 𐆉 (decimal) or 𐆉 (hex).
- What is the UTF-8 encoding of U+10189?
- F0 90 86 89 (hex), 4 bytes. In a URL it is %F0%90%86%89.
- How do I write U+10189 in JavaScript or Python?
- JavaScript: \u{10189} or \uD800\uDD89. Python: \U00010189.
Source
Unicode Character Database 18.0.0 (Unicode License v3); HTML entity names from the WHATWG HTML Standard (CC BY 4.0). The encodings above are computed from the code point and checked against Python's encoders. How the character looks depends on your fonts.
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