Undefined Character (U+123FF)

Block:	Cuneiform, U+12000 - U+123FF^[1]
Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𒏿` `𒏿`
UTF-8 Encoding:	`0xF0 0x92 0x8F 0xBF`
UTF-16 Encoding:	`0xD808 0xDFFF`
UTF-32 Encoding:	`0x000123FF`

References