This property defines the Unicodes which have numeric value as 15
Characters like ⑮,⒂,⒖, etc. are listed under 15 Numeric Value.
7 Characters are present in 15 Numeric Value starting with the Unicode point U+246E that represents the character ⑮.
Currently, as per latest version 15.0.0, Unicode supports 150 number of Numeric Value. Here are a few examples - 0,1,1/10, etc.