U+1018A "𐆊" Greek Zero Sign Unicode Character

U+1018A "𐆊" Greek Zero Sign is an ancient symbol used in Greek papyri and inscriptions to denote the number zero, particularly in the context of the Hellenistic period's sexagesimal numbering system, which was borrowed from Babylonian mathematics. It served as a placeholder within positional notation, allowing scribes to indicate an empty digit column in calculations or recordings of astronomical data, similar to the modern concept of zero. This character is encoded in the Unicode standard under the Ancient Greek Numbers block and represents one of the earliest known uses of a zero symbol in Western history, predating the widespread adoption of the Indian numeral zero.

General Properties

Code Point	U+1018A
Version Added	4.1
Name	Greek Zero Sign
Block	Ancient Greek Numbers
General Category	Other Number
Canonical Combining Class	Not Reordered
Bidirectional Class	Other Neutral

Encodings

HTML Decimal Encoding	𐆊
HTML Hex Encoding	𐆊
UTF-8 Encoding	0xF0 0x90 0x86 0x8A
UTF-16 Encoding	0xD800 0xDD8A
UTF-32 Encoding	0x0001018A
C/C++/Java Escape	\ud800\udd8a

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	Numeric
Numeric Value	0
Line Break	Alphabetic
Script	Greek
Script Extensions	Greek
Indic Syllabic Category	Other
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other