| HTML Entity (dec) | 𡿿 |
| HTML Entity (hex) | 𡿿 |
| UTF-8 (hex) | 0xf0a1bfbf / 0xf0 0xa1 0xbf 0xbf (4 bytes) |
| UTF-8 (dec) | 240, 161, 191, 191 (4 bytes) |
| UTF-16-BE (hex) | 0xd847dfff / 0xd8 0x47 0xdf 0xff (4 bytes) |
| UTF-16-BE (dec) | 216, 71, 223, 255 (4 bytes) |
| UTF-32-BE (hex) | 0x21fff / 0x00 0x02 0x1f 0xff (4 bytes) |
| UTF-32-BE (dec) | 0, 2, 31, 255 (4 bytes) |
| C/C++/Java source code | "\u21fff" |
| Python source code | "\u21fff" |