11 in Binary, Roman numerals, Hexadecimal & More
The number 11 is 1011 in binary, XI in Roman numerals, B in hexadecimal and 13 in octal.
11 decimal = 1011 binary
11 in every number system
| System | Written as |
|---|---|
| Binary (base 2) | 1011 |
| Roman numerals | XI |
| Hexadecimal (base 16) | B |
| Octal (base 8) | 13 |
| Duodecimal (base 12) | B |
| Ternary (base 3) | 102 |
| Base 36 | B |
| Vigesimal (base 20) | B |
| Quaternary (base 4) | 23 |
| Quinary (base 5) | 21 |
| Senary (base 6) | 15 |
About the number 11
- 11 is an odd number.
- 11 is a prime number.
- Written in binary it needs 4 bits, so it fits in one byte.