Mod of numbers with large exponents [modular order reduction]
360
Modular exponentiation by hand ($a^b\bmod c$)
49649
How can I find out whether a number is a quadratic residue in a large modulo?
68252
Chinese Remainder Theorem solvability for non-coprime moduli
81932
RSA with small exponents?
47624
Modulo operation with negative numbers
151636
Fast way to calculate n! mod m where m is prime?
4967
Fractions with large elements
9039
What is the best way to solve modular arithmetic equations such as $9x \equiv 33 \pmod{43}$?
131905
Proof for exponentiation in modular arithmetic
96326
Number of $q$-th residues modulo $n$
1948
How do you raise a Java BigInteger to the power of a BigInteger without doing modular arithmetic?
105225
Number Theory: Complete set of residues modulo $n$
109490
Modular arithmetic problem (mod $13$)
141704
Fractional exponentiation in modular arithmetic
9414
Is There a Natural Way to Extend Repeated Exponentiation Beyond Integers?
34192
Solve $x^{5} \equiv 2$ mod $221\ $ [Taking modular $k$'th roots if unique]
91565
How to efficiently compute $\,25^{37}\pmod{55}$?