Undefined Character (U+13FEF)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𓿯` `𓿯`
UTF-8 Encoding:	`0xF0 0x93 0xBF 0xAF`
UTF-16 Encoding:	`0xD80F 0xDFEF`
UTF-32 Encoding:	`0x00013FEF`

References