Read if you have time to.
I believe both you and I each gave a reference.
It is greatly expanded from the previous version so well worth checking it out.
In , it is denoted by short.
Since there is no integer that can be multiplied by itself to make 63, the square root of 63 is irrational.
Practically all new desktop processors are capable of using 64-bit words, though with 8- and 16-bit word size are still common.