Find the solutions to $4x \equiv 16 \pmod{20}$
42754
Modular arithmetic: division, fractions, solving linear congruences
14773
Finding distinct solutions for the equation
127901
If $x^2+y^2 \equiv 0\pmod{p}$, then $p \equiv 1 \pmod{4}$
108035
solving diophantine equations using congruences
32463
$ax\equiv b\pmod{\! n}$ has a unique solution if $\gcd(a,n) = 1$
112575
Finding integer solutions of $m^2-n^5 = m - n$
17051
Determine the fourth roots of -16
41673
Solve congruence system $\ x\equiv m_i-1 \pmod{m_i}\,$ for $\,i = 1,\ldots, k$
134450
Chinese Remainder Theorem $\ x\equiv m_k-2\pmod{m_k}$
89590
The number of solutions of $ax^2+by^2\equiv 1\pmod{p}$ is $ p-\left(\frac{-ab}{p}\right)$
54608
How to find all solutions of $4^x-3^x=1$?
145617
Is there any simple trick to solve the congruence $a^{24}\equiv6a+2\pmod{13}$?
94965
Solve $x\equiv 1\pmod2$, $x\equiv 2\pmod3$, $x\equiv 3\pmod4$, $x\equiv 4\pmod5$, $x\equiv 5\pmod6$ and $x\equiv 0\pmod7$
18767
How do you find the modular inverse of $5\pmod{\!11}$
153170
Find the number of solutions of the equation $e^{4x}+e^{3x}-4e^{2x}+e^x+1=0$
29989
Solve $x^2+5x+6 \equiv 0 \pmod{\!11\cdot 17}$
106271
Solutions of Diophantine equations in Natural numbers