Number of solutions to $89 x \equiv 7 \pmod{55}$
42754
Modular arithmetic: division, fractions, solving linear congruences
21530
How many solutions of $\mod 63$ : $x^2=1 \pmod7 $ and $x^3=1\pmod 9$
146491
Number of solutions of $x_1+x_2+\dots+x_k=n$ with $x_i\le r$
149481
Number theory counting sums of squares modulus
42360
Find the number of solutions of $a_0+a_1+a_2=17$ if $2\le a_0\le 5$, $3\le a_1\le 6$, $4\le a_2\le 7$.
33314
How many non-negative integer solutions does $x_1+x_2+\cdots+x_n=A$ have?
62036
Finding the number of non-negative integral solutions of $x + y + z = 10$
51445
Number Theory: Find all solutions of $\phi(n)=16$ and $\phi(n)=24$
92700
How can I solve $x^2 \equiv 19 \pmod {59}$.
126689
Find the number of natural solutions of $5^x+7^x+11^x=6^x+8^x+9^x$
7085
Prove that if the equation $x^{2} \equiv a\pmod{pq}$ has any solutions, then it has four solutions.
80843
Find all solutions to $x^9 \equiv 25 \pmod {29}$
17194
$6^{(n+2)} + 7^{(2n+1)}$ is divisible by $43$ for $n \ge 1$
44354
Total number of solutions of an equation
18767
How do you find the modular inverse of $5\pmod{\!11}$
91565
How to efficiently compute $\,25^{37}\pmod{55}$?
29989
Solve $x^2+5x+6 \equiv 0 \pmod{\!11\cdot 17}$