This is a preview. Log in through your library . Abstract If $a$ is not a multiple of $n$ and $a^{n - 1} \not\equiv 1 \operatorname{mod} n$, then $n$ must be ...

A prime number is a whole number, greater than 1, that only has two factors. A factor is a number that divides another number evenly, with no remainder or decimal. The factors of a prime number are ...