How to find all integer $x$ such that $x^{2}+5145x+2332\equiv 0\pmod{ 9797}$
29989
Solve $x^2+5x+6 \equiv 0 \pmod{\!11\cdot 17}$
75166
Find with proof all positive integers $n$ such that $2^n + 1 \equiv 0 \pmod{n}$
38876
$r! \equiv (−1)^k \pmod p$
134450
Chinese Remainder Theorem $\ x\equiv m_k-2\pmod{m_k}$
145617
Is there any simple trick to solve the congruence $a^{24}\equiv6a+2\pmod{13}$?
100336
Find an integer having the remainders $2,3,4,5$ when divided by $3,4,5,6$, respectively.
109490
Modular arithmetic problem (mod $13$)
75351
How to find inverse Modulo?
148906
Finding integers $m,n$ such that $(m-n)^2=4mn/(m+n-1)$
3563
Find all roots of $\,x^2\!\equiv x\pmod{\!900}$, i.e all idempotents in $\Bbb Z_{900}$
46668
How to find integer solutions to $M^2=5N^2+2N+1$?
151508
How to determine number with same amount of odd and even divisors
41890
How to get all solutions of $x^2 \equiv$ $a$ mod $p$?
107990
Does there exist an integer $x$ satisfying the following congruences?
31122
How could I find $x$ in this equation $x^2-x+6 \equiv 0 \pmod {9}$
79219
Prove that $a^{2^n} \equiv 1 \pmod{2^{n+2}},$ where $a$ is an odd integer.
155743
Why does the equation $x^2\equiv2 \pmod 5$ have no solutions?