Wilson and Fermat's Theorem
45341
$(m, m+2)$ is twin prime, iff $4((m-1)! + 1) \equiv -m \pmod {m(m+2)}$
1712
$ d_1,d_2\mid n\iff {\rm lcm}(d_1,d_2)\mid n\ $ [LCM Universal Property]
146053
Proving identities (mod $pq$) using Fermat's little theorem?
35650
Number theory in Physics
16697
Fermat Last Theorem for non Integer Exponents
4140
Fermat's Last Theorem with negative exponent
42885
Fermat primes relation to $2^n+1$
52217
Residue of two functions
5486
RSA: How Euler's Theorem is used?
136894
Reference request: Clean proof of Fermat's last theorem for $n=3$.
138741
Fermat numbers question
38727
Modular Exponentiation and Primes
32136
How to prove Lucas's Converse of Fermat's Little Theorem without using primitive root?
20407
Proof of Wolstenholme's theorem
39276
Ground Plan - Prove Fermat-Euclid's Totient Theorem with Lagrange's Theorem
157131
Show that all Fermat numbers pass the base $2$ test (pseudoprime).
20574
Understanding the proof for $\gcd (F_n, F_{n+k}) = 1$ where $F_n$ is a Fermat number