| HTML Entity (dec) | ₁ |
| HTML Entity (hex) | ₁ |
| UTF-8 (hex) | 0xe28281 / 0xe2 0x82 0x81 (3 bytes) |
| UTF-8 (dec) | 226, 130, 129 (3 bytes) |
| UTF-16-BE (hex) | 0x2081 / 0x20 0x81 (2 bytes) |
| UTF-16-BE (dec) | 32, 129 (2 bytes) |
| UTF-32-BE (hex) | 0x2081 / 0x00 0x00 0x20 0x81 (4 bytes) |
| UTF-32-BE (dec) | 0, 0, 32, 129 (4 bytes) |
| C/C++/Java source code | "\u2081" |
| Python source code | "\u2081" |