As character names:

U+DFFFF <not a character> character (&#xDFFFF;)

As raw characters:

󟿿

As a string of HTML entities:



Decoder output:

Byte number 1 is decimal 243, hex 0xF3, octal \363, binary 11110011
This is the first byte of a 4 byte sequence.

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

Byte number 3 is decimal 191, hex 0xBF, octal \277, binary 10111111
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 191, hex 0xBF, octal \277, binary 10111111
This is continuation byte 3, expecting 0 more.

U+DFFFF	<not a character>