Number of natural solutions to the equation $x_1\cdot{x_2}\cdot{x_3}\cdot{x_4}=1000000$
99264
the number of positive-integer solutions that satisfy $x_1\cdot x_2\cdot x_3\cdot x_4=1,000,000$?
33314
How many non-negative integer solutions does $x_1+x_2+\cdots+x_n=A$ have?
16946
How many solutions for an equation with simple restrictions
25984
Explicit solution of the recursion $x_n = x_{n-1}^2 - 2$ with $x_0>2$
73743
Number of elements in the quotient ring $\mathbb{Z}[X]/(X^2-3, 2X+4)$
23726
A closed form for $1^{2}-2^{2}+3^{2}-4^{2}+ \cdots + (-1)^{n-1}n^{2}$
42032
Find all solutions to $x^2\equiv 1\pmod {91},\ 91 = 7\cdot 13$
28594
Number of integer solutions of the following equation
77533
What solutions does the equation 4x≡2mod10 have? (Hint, it will have more that one.) What about solutions to an equation ax≡dmodn, where d=gcd(a,n)?
15314
Number of solutions to $x^n \equiv 1 \mod p$
142538
The number of solutions to an $n^{th}$ order differential equation.
48502
number of ordered pairs of integers $(x,y)$ satisfying the equation
8446
Number of solutions over positive integers of $x_1 + x_2 + ... + x_n = S$ for $x_i \in [0, 25]$
23866
Do there exist an infinite number of integer-solutions $(x,y,z)$ of $x^x\cdot y^y=z^z$ where $1\lt x\le y$?
56803
Finding solutions to congruence equations
110958
How to solve for any given natural number n?
10753
Natural number solutions to $\frac{xy}{x+y}=n$ (equivalent to $\frac 1x+\frac 1y=\frac 1n$)