As character names:

U+FE5F SMALL NUMBER SIGN character (﹟)

As raw characters:

﹟

As a string of HTML entities:

﹟

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 143, hex 0x8F, octal \217, binary 10001111
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 185, hex 0xB9, octal \271, binary 10111001
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 159, hex 0x9F, octal \237, binary 10011111
This is continuation byte 3, expecting 0 more.

U+FE5F	SMALL NUMBER SIGN
	# <small> 0023