U+213F "ℿ" Double-Struck Capital Pi Unicode Character

Unicode Version 17.0

U+213F "ℿ" Double-Struck Capital Pi is a typographic symbol that belongs to the block of letterlike symbols, designed to resemble a capital Greek letter Pi (Π) rendered in a double-struck or blackboard bold style, which is typically used in mathematical notation to represent the product symbol or the product of a sequence. It is distinct from the ordinary Greek capital Pi and is often employed in contexts where a clear, stylized representation is needed, such as in advanced mathematics or to indicate a set of numbers like the prime real numbers, though its usage is less common than the standard single-struck capital Pi. This character can be found in modern fonts that support the Unicode standard and is sometimes used in academic or technical documents for clarity.

General Properties

Code Point U+213F
Version Added 3.2
Name Double-Struck Capital Pi
Block Letterlike Symbols
General Category Uppercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "Π" U+03A0 Greek Capital Letter Pi

Encodings

HTML Decimal Encoding ℿ
HTML Hex Encoding ℿ
UTF-8 Encoding 0xE2 0x84 0xBF
UTF-16 Encoding 0x213F
UTF-32 Encoding 0x0000213F
C/C++/Java Escape \u213f

Unicode Properties

NFC Quick Check Yes
NFD Quick Check Yes
Numeric Type None
Numeric Value NaN
Line Break Alphabetic
Uppercase Yes
Cased Yes
Changes When NFKC Casefolded Yes
NFKC Casefold "π" U+03C0 Greek Small Letter Pi
NFKC Simple Casefold "π" U+03C0 Greek Small Letter Pi
Script Common
Script Extensions Common
Indic Syllabic Category Other
ID Start Yes
XID Start Yes
ID Continue Yes
XID Continue Yes
Alphabetic Yes
Math Yes
Other Math Yes
Vertical Orientation Upright
Grapheme Base Yes
Grapheme Cluster Break Other
Word Break Alphabetic letter
Sentence Break Upper