How to find modulo of large numbers like $9801\! \pmod {\!32}$
360
Modular exponentiation by hand ($a^b\bmod c$)
6918
Primes congruent to 1 mod 6
77351
How to use Fermat's little theorem to find $50^{50}\pmod{13}$?
36611
Algorithms for solving the discrete logarithm $a^x \equiv b\pmod{n}$ when $\gcd(a,n) \neq 1$
102444
What is $26^{32}\bmod 12$?
104176
$15x\equiv 20 \pmod{88}$ Euclid's algorithm
114220
Find the value of $\large i^{i^{.^{.^.}}}$
51161
Finding the inverse of 84 mod 5
20224
Calculating factorial of large numbers in C
58803
${n \choose k} \bmod m$ using Chinese remainder theorem?
35382
What is the fastest algorithm for finding the natural logarithm of a big number?
15897
Solve a congruence $1978^{20}\equiv x\pmod{125}$
55984
How can I find the answer to $\varphi(2^{400} + 2)$?
1948
How do you raise a Java BigInteger to the power of a BigInteger without doing modular arithmetic?
78905
Calculate the factorial of an arbitrarily large number, showing all the digits
33735
The square of an integer is congruent to 0 or 1 mod 4
42754
Modular arithmetic: division, fractions, solving linear congruences