New posts in Gcd And Lcm

The difference between the HCF and LCM of $x$ and $18$ is $120$. Find $x$.

Show that $n | \sum_{k=1}^n m^{\textrm{gcd}(k, n)}$ where $n, m \geq 1$

On finding triplets that satisfy a certain GCD and LCM property.

In a commutative ring, GCD exists implies LCM exists?

if the lcm is simply the product, then the integers are pairwise prime

How can we prove that $\gcd((n^4) + (n+1)^4 , (n+1)^4 + (n+2)^4) = 1$?

Finding: $\gcd\left(2^{200}-2^{100},2^{200}+2^{101}\right)$ and $\gcd\left(3^{202}-3^{101},3^{202}+3^{102}\right)$

Inductive proof of gcd Bezout identity (from Apostol: Math, Analysis 2ed)

Proof that gcd(n1, .... , nk) = gcd(n1, gcd(n2,...,nk))

There is a number divisible by all integers from 1 to 200, except for two consecutive numbers. What are the two?