As character names:

U+1D4BE MATHEMATICAL SCRIPT SMALL I character (𝒾)

As raw characters:

𝒾

As a string of HTML entities:

𝒾

Decoder output:

Byte number 1 is decimal 240, hex 0xF0, octal \360, binary 11110000
This is the first byte of a 4 byte sequence.

Byte number 2 is decimal 157, hex 0x9D, octal \235, binary 10011101
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 146, hex 0x92, octal \222, binary 10010010
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 190, hex 0xBE, octal \276, binary 10111110
This is continuation byte 3, expecting 0 more.

U+1D4BE	MATHEMATICAL SCRIPT SMALL I
	# <font> 0069 latin small letter i