As character names:

U+211C BLACK-LETTER CAPITAL R character (ℜ)

As raw characters:

ℜ

As a string of HTML entities:

ℜ

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 132, hex 0x84, octal \204, binary 10000100
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 156, hex 0x9C, octal \234, binary 10011100
This is continuation byte 2, expecting 0 more.

U+211C	BLACK-LETTER CAPITAL R
	= real part
	# <font> 0052 latin capital letter r