Finding the smallest $n$ such that $n^{2}$ ends with $00001$
42032
Find all solutions to $x^2\equiv 1\pmod {91},\ 91 = 7\cdot 13$
1895
How to show that $2730\mid n^{13}-n\;\;\forall n\in\mathbb{N}$
102202
The smallest infinity and the axiom of choice
82262
minimal polynomial of nth root of 2 over $\mathbb Q$
52324
Tight bound for $T(n) = T(n^{1/2}) + 1$
50172
Show that $\mathbb{Q}(\sqrt{2})$ is the smallest subfield of $\mathbb{C}$ that contains $\sqrt{2}$
133481
How to find the smallest number with just $0$ and $1$ which is divided by a given number?
53042
Find solutions to $\varphi\left(n\right)=2^{32}$
140939
Smallest Perfect Cube ending in 888
44790
Find $n$ for which $\frac{n(n+1)}{2}$ is perfect square
87666
Find $n$ such that $n/2$ is a square, $n/3$ is a cube, and $n/5$ a fifth power
143274
What is the smallest unknown natural number?
137528
Get next smallest Double number
79187
Can we find $c_n$ to make $X_nc_n \rightarrow 0$ almost surely, even if $EX_n > \infty$?
141529
Proving existence of a minimum
44857
Why the $(n+1)$th prime number cannot exceed the smallest prime divisor of $p_1\dotsc p_n + 1$
33866
Show that $n$ does not divide $2^n - 1$ where $n$ is an integer greater than $1$?