Multiplying the residue classes mod n by a coprime
380
Bijection from modular multiplication?
114519
An elementary question regarding a multiplicative character over finite fields
114916
$\mathbb Z_{mn}$ isomorphic to $\mathbb Z_m\times\mathbb Z_n$ whenever $m$ and $n$ are coprime
40156
Determine all primes $p$ for which $5$ is a quadratic residue modulo $p$
29231
Proof of : $x^{n}\equiv x^{\varphi(m)+[n \bmod \varphi(m)]} \mod m$
9118
Polynomial division: an obvious trick? [reducing mod $\textit{simpler}$ multiples]
71788
Prove existence of multiplicative inverse modulo p when p is prime
118955
Specific steps in applying the Chinese Remainder Theorem to solve modular problem splitting modulus
25034
Fermat numbers are coprime
49649
How can I find out whether a number is a quadratic residue in a large modulo?
68635
When is $2$ a quadratic residue mod $p$?
10266
Minimal polynomial reducible modulo every prime $p$
42754
Modular arithmetic: division, fractions, solving linear congruences
9787
Primitive roots modulo primes congruent to n!
60057
number of quadratic residues in finite field
7452
Splitting of primes in the compositum of fields
134450
Chinese Remainder Theorem $\ x\equiv m_k-2\pmod{m_k}$