List questions from carmichael-numbers | MathQA

Carmichael numbers of the form $\ n^2+1\ $

Published on 25 Sep 2020 - 13:58

Carmichael number divisible by a given positive integer

Published on 18 Oct 2020 - 8:49

Can a product of consecutive primes be a Carmichael number?

Published on 07 Nov 2020 - 10:44

How many Carmichael numbers exist of the form $\Phi_n(b)$ for $n>6$?

Published on 03 Feb 2021 - 13:56

$n$ such that $ n^2 \mid \varphi(n)^{\varphi(n)} - 1 $. Can $n$ be a prime number $n>2$ or a Carmichael number?

Published on 07 Feb 2021 - 15:31

On the existence of abundant Carmichael numbers

Published on 22 Feb 2021 - 16:13

Conjecture on The Generalized Carmichael Numbers

Published on 22 Feb 2026 - 23:24

Can $n^2-1$ be a Carmichael number?

Published on 29 Mar 2021 - 8:25

Addition to previously asked question on Generalized Carmichael Numbers

Published on 22 Feb 2026 - 23:26

smallest Carmichael number

Published on 19 May 2021 - 14:22

Finding a Carmichael number $n$ such that $\prod_{p|n} \frac{p} {p-1} > 2$, where $p$ are primes, if it exists

Published on 02 Oct 2022 - 14:52