Undefined Character (U+13F91)

Plane:	Supplementary Multilingual Plane, U+10000 - U+1FFFF^[1]
HTML Entity:	`𓾑` `𓾑`
UTF-8 Encoding:	`0xF0 0x93 0xBE 0x91`
UTF-16 Encoding:	`0xD80F 0xDF91`
UTF-32 Encoding:	`0x00013F91`

References