Tips finding the gcd of $(n^2-3n-1, n-4)$
91353
Given $n \in \Bbb Z$, determine $\gcd(3n^2 + 7n + 4, n + 2)$.
147079
$\gcd\left(\binom{n}{k},n\right)>1$ for nontrivial values?
20477
Prove that $\gcd(3^n-2,2^n-3)=\gcd(5,2^n-3)$
23590
Show that $\gcd\left(\frac{a^n-b^n}{a-b},a-b\right)=\gcd(n d^{n-1},a-b)$
26336
Prove that $n(n^2 - 1)(n + 2)$ is divisible by $4$ for any integer $n$
55441
Check: For the integers $a,b,c$ show that $\gcd(a,bc)=\gcd(a,\gcd(a,b)\cdot c)$
73391
Prove that if $\gcd(a,b)=1$, then $\gcd(a^2,b^2)=1$
57281
Is Bezout's lemma enough to confirm the GCD of a number.
113641
Suppose the gcd (a,b) = 1 and c divides a + b. Prove that gcd (a,c) = 1 = gcd (b,c)
57944
Euler's Formula application for distinct odd primes with gcd 1
37808
Show that $\gcd(a^2, b^2) = \gcd(a,b)^2$
20574
Understanding the proof for $\gcd (F_n, F_{n+k}) = 1$ where $F_n$ is a Fermat number
52546
How can I find the possible values that $\gcd(a+b,a^2+b^2)$ can take, if $\gcd(a,b)=1$
91921
Divisibility of $n\cdot2^n+1$ by 3.
84501
Proof involving Cyclic group, generator and GCD
125499
Find this sequence $a_{i}$ such $\gcd{(a_{i},a_{j})}=\gcd{(i,j)}$
80148
Prove $\gcd(a+b,a^2+b^2)$ is $1$ or $2$ if $\gcd(a,b) = 1$