This property defines the Unicodes which belongs to Indic Siyaq Numbers block
Characters like 𞱱,𞱲,𞱳, etc. are listed under Indic Siyaq Numbers Block.
70 Characters are present in Indic Siyaq Numbers Block starting with the Unicode point U+1EC71 that represents the character 𞱱.
Currently, as per latest version 15.0.0, Unicode supports 328 number of Block. Here are a few examples - Latin Extended E,Adlam,Aegean Numbers, etc.