## English

### Noun

1. The number which, added to the given n-digit number in radix r, results in ${\displaystyle r^{n}}$. In binary (${\displaystyle r=2}$), this is the two's complement.
The radix complement of ${\displaystyle 01100101_{2}}$ is ${\displaystyle 10011011_{2}}$.
The radix complement of ${\displaystyle 138053_{10}}$ is ${\displaystyle 861947_{10}}$.
The radix complement of ${\displaystyle 0423102_{5}}$ is ${\displaystyle 4021343_{5}}$.