As character names:

U+246E CIRCLED NUMBER FIFTEEN character (⑮)

As raw characters:

⑮

As a string of HTML entities:

⑮

Decoder output:

Byte number 1 is decimal 226, hex 0xE2, octal \342, binary 11100010
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 145, hex 0x91, octal \221, binary 10010001
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 174, hex 0xAE, octal \256, binary 10101110
This is continuation byte 2, expecting 0 more.

U+246E	CIRCLED NUMBER FIFTEEN
	# <circle> 0031 0035