UnicodeCharactercom
ℇ
U+2107 · EULER CONSTANT

Euler Constant

  • CodepointU+2107
  • NameEULER CONSTANT
  • Decimal8455
  • BlockLetterlike Symbols (U+2100–U+214F)
  • Plane0 — Basic Multilingual Plane
  • ScriptCommon
  • CategoryLu — Uppercase Letter
  • Unicode version1.1 (1993)
  • Bidi classL — Left-to-Right
  • Combining class0
  • East Asian widthN — Neutral
  • MirroredNo

About this character

U+2107 (ℇ) is EULER CONSTANT, an uppercase letter in the Letterlike Symbols block. Its script is Common: it is shared by many writing systems rather than belonging to one. It was added in Unicode 1.1 (1993).

It is a compatibility variant of U+0190 Ɛ (compatibility decomposition <compat>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+0190 Ɛ. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

How to type ℇ

§

Encodings & escapes

UTF-8 encoder →
UTF-8E2 84 873 bytes
UTF-1621071 code unit
UTF-32000021074 bytes
HTML decimal&#8455;
HTML hex&#x2107;
CSS\2107in content: "…"
JavaScript\u2107
JSON\u2107
Python\u2107
Python\N{EULER CONSTANT}by name
Java / C#\u2107
C / C++\u2107universal character name
Rust / Swift / PHP\u{2107}
Go\u2107
Ruby\u2107
Excel / Sheets=UNICHAR(8455)
URL-encoded%E2%84%87percent-encoded UTF-8
§

Normalization forms

Normalizer →
NFCunchanged
NFDunchanged
NFKCU+0190 Ɛ
NFKDU+0190 Ɛ
§

Looks similar

Characters that Unicode’s security data (UTS #39 confusables) lists as visually confusable with this one. Useful for spotting lookalike spoofing in URLs and usernames.

U+0190ƐLatin Capital Letter Open E U+0510ԐCyrillic Capital Letter Reversed Ze U+13CBᏋCherokee Letter Quv U+10401𐐁Deseret Capital Letter Long E U+16F2D𖼭Miao Letter Nyha U+1D221𝈡Greek Instrumental Notation Symbol-7
§

Nearby in Letterlike Symbols

All in block →
U+2101℁Addressed to the Subject U+2102ℂDouble-Struck Capital C U+2103℃Degree Celsius U+2104℄Centre Line Symbol U+2105℅Care of U+2106℆Cada Una U+2108℈Scruple U+2109℉Degree Fahrenheit U+210AℊScript Small G U+210BℋScript Capital H U+210CℌBlack-Letter Capital H U+210DℍDouble-Struck Capital H