As character names:

U+1D7F8 MATHEMATICAL MONOSPACE DIGIT TWO character (𝟸)

As raw characters:

𝟸

As a string of HTML entities:

𝟸

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 159, hex 0x9F, octal \237, binary 10011111
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 184, hex 0xB8, octal \270, binary 10111000
This is continuation byte 3, expecting 0 more.

U+1D7F8	MATHEMATICAL MONOSPACE DIGIT TWO
	# <font> 0032 digit two