| HTML Entity (dec) | 忽 |
| HTML Entity (hex) | 忽 |
| UTF-8 (hex) | 0xe5bfbd / 0xe5 0xbf 0xbd (3 bytes) |
| UTF-8 (dec) | 229, 191, 189 (3 bytes) |
| UTF-16-BE (hex) | 0x5ffd / 0x5f 0xfd (2 bytes) |
| UTF-16-BE (dec) | 95, 253 (2 bytes) |
| UTF-32-BE (hex) | 0x5ffd / 0x00 0x00 0x5f 0xfd (4 bytes) |
| UTF-32-BE (dec) | 0, 0, 95, 253 (4 bytes) |
| C/C++/Java source code | "\u5ffd" |
| Python source code | "\u5ffd" |