This property defines the Unicodes which have numeric value as 1/64
Characters like 𑿃, etc. are listed under 1/64 Numeric Value.
1 Characters are present in 1/64 Numeric Value starting with the Unicode point U+11FC3 that represents the character 𑿃.
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.