$5^x \equiv 1520 \pmod {9797}$
36611
Algorithms for solving the discrete logarithm $a^x \equiv b\pmod{n}$ when $\gcd(a,n) \neq 1$
28957
Verifying that $2^{44}-1$ is divisible by $89$
124241
Finding all integers $k \geq 2$ such that $k^2 \equiv 5k \pmod{15}$. What is going on here?
18767
How do you find the modular inverse of $5\pmod{\!11}$
34192
Solve $x^{5} \equiv 2$ mod $221\ $ [Taking modular $k$'th roots if unique]
49096
How can I prove $5^{3^n}+1$ is divisible by $3^{n+1}$
141183
How to determine highest power of $2$ in $3^{1024}-1$?
158684
How to solve and see resolution of $13^{53} \pmod 7$ using Fermat little Theorem?
121122
Calculate $2^{5104} \bmod 10$ using mental arithmetic
107725
Prove that if $n$ is not divisible by $5$, then $n^4 \equiv 1 \pmod{5}$
156786
Show that $15\mid 21n^5 + 10n^3 + 14n$ for all integers $n$.
54473
Value of $\sum 1/p^p$
20504
$\forall m,n \in \Bbb N$ : $\ 56786730\mid mn(m^{60}-n^{60})$
150289
A number with an interesting property. $abcd=a^b c^d$
139776
Divisibility tests and remainder mod $9,11,99,101,999,1001\,$ (casting out nines and elevens)
76828
Evaluating $\sum_{i = 0}^{\lfloor n/2 \rfloor} {n \choose 2i}p^{2i}(1 - p)^{n - 2i}$
15436
Find p and q s.t. $({p-1})^{q-1}+({q-1})^{p-1} \equiv 101 \pmod {pq}$