Using indices to calculate congruence
4972
Mod of numbers with large exponents [modular order reduction]
10105
Proving $\, a^b = (a\bmod n)^b\, \pmod{\!n}\ $ [Congruence Power Rule]
79485
Problem with solving systems of linear congruence of two variables
24416
What is the cleverest way to calculate $[\hat{a}^{M},\hat{a}^{\dagger N}]$ when $[\hat{a},\hat{a}^{\dagger}]=1$?
76507
$\gcd(b^x - 1, b^y - 1, b^ z- 1,\dots) = b^{\gcd(x, y, z,\dots)} -1$
137109
Evaluating a summation of inverse squares over odd indices
19164
On the GCD of a Pair of Fermat Numbers
131941
Solve quadratic congruences.
60305
Proving the congruence $p^{q-1}+q^{p-1} \equiv 1 \pmod{pq}$
104176
$15x\equiv 20 \pmod{88}$ Euclid's algorithm
42754
Modular arithmetic: division, fractions, solving linear congruences
15897
Solve a congruence $1978^{20}\equiv x\pmod{125}$
120495
Does this correctly interpret the "$\cong$" between groups as "$=$" between sets?
56803
Finding solutions to congruence equations
159010
Solve sum with indices
146682
How to calculate the index (lexicographical order) when the combination is given
152878
calculate the gcd of $a+b$ and $p^4$