As character names:

U+211B SCRIPT 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 155, hex 0x9B, octal \233, binary 10011011
This is continuation byte 2, expecting 0 more.

U+211B	SCRIPT CAPITAL R
	= Riemann Integral
	~ 211B FE00 chancery style
	~ 211B FE01 roundhand style
	# <font> 0052 latin capital letter r