is $\sqrt{n!}\notin\mathbb{Z}$ for $n>1$ true?
8034
Can $n!$ be a perfect square when $n$ is an integer greater than $1$?
63661
integers $n$ such that $(n-1)!+1$ is a power of $n$
22783
Is the set $Z_n = \{ 0, 1, . . . , n-1 \}$ for $n ≥ 1$ is a group under addition modulo n?
38549
$\mathbb{Q}(\sqrt{n}) \cong \mathbb{Q}(\sqrt{m})$ iff $n=m$
60665
Meaning of $\mathbb{Z}\left[\sqrt{3}\right]$?
35691
$\mathbb Z[\sqrt 3]$ contains infinitely many units
93029
Prove that when $d$ is in $\mathbb{Q} \setminus\mathbb{Z}$, $\mathbb{Z}[\sqrt{d}]$ is not a finitely generated abelian group.
51687
Is the set $ \ (\mathbb{Z}_p \setminus \mathbb{Z}) \cap \mathbb{Q}$ non-empty?
105110
Why does $\sqrt{n\sqrt{n\sqrt{n \ldots}}} = n$?
96361
Limit of $n$th root of $n$!
96332
Prove by induction that $\sqrt[n+1]{n+1}<\sqrt[n]{n}$ for $n\ge 3$
138026
To show that $n!f(x) \in \mathbb{Z}[x]$
153204
Euclidean domain $\mathbb{Z}[\sqrt{d}]$
141799
Is $2^{|\mathbb{N}|} = |\mathbb{R}|$?
158730
Is $\ln(\ln(n))$ irrational for any integer $n>1$?
88425
Prove that $\,\sqrt [n] n < 1 + \sqrt{\frac{2}{n}}\,$
150677
What are the integers $n$ such that $\mathbb{Z}[\sqrt{n}]$ is integrally closed?