One of the most known oned is Rust, but what others implement this? I am talking about memory safety.

The most common ones are base 2 or base 10 (aka decimal floating point). But can they have any base (like base 3, base 6, base 4 etc.)?

Recall that every real number $x$ can be expressed as $b + m$, where $b \in \mathbb{Z}$ is the integral part and where $m \in [0,1)$ is the mantissa. Definition. A real number $x$ is said to be in a complexity class $\mathsf{C}$ if the decision problem asking whether the $n$-th bit below the radi...