Let $q$ be a composite number such that $\exists n \in N: n^q \equiv n \pmod q$.
Then $q$ is a Fermat pseudoprime to base $n$.
This category has the following 3 subcategories, out of 3 total.
Pages in category "Fermat Pseudoprimes"
The following 6 pages are in this category, out of 6 total.