Modular Arithmetic Operations..
20908
How to compute $k$'th roots $\!\bmod n$?
47624
Modulo operation with negative numbers
131905
Proof for exponentiation in modular arithmetic
101057
Show that $1^{p-1} + 2^{p-1} +\ldots + (p-1)^{p-1} \equiv -1 \mod p$
12210
Show that $a^{61} \equiv a\pmod{1001}$ for every $a \in \mathbb{N}$
138279
Multiplicative order and powers
110703
How Can I prove (a+b) mod m = (a mod m) + (b mod m)) mod m?
57654
Congruent Modulo $n$: definition
360
Modular exponentiation by hand ($a^b\bmod c$)
68960
How to solve $ 13x \equiv 1 ~ (\text{mod} ~ 17) $?
105719
Complex numbers modulo integers
135986
Show if $a \equiv b \pmod{m}$ then $ac \equiv bc\pmod{mc}$
156089
Why is the associative property valid for modular arithmetic?
41673
Solve congruence system $\ x\equiv m_i-1 \pmod{m_i}\,$ for $\,i = 1,\ldots, k$
38727
Modular Exponentiation and Primes
31162
What is the meaning of modular fractions?
12636
Product Rule for mod operator: $ ab\bmod p = ((a\bmod p)(b\bmod p))\bmod p$