1 Answers
In mathematics, a Lucas–Carmichael number is a positive composite integer n such that
The first condition resembles the Korselt's criterion for Carmichael numbers, where -1 is replaced with +1. The second condition eliminates from consideration some trivial cases like cubes of prime numbers, such as 8 or 27, which otherwise would be Lucas–Carmichael numbers is always divisible by n + 1].
They are named after Édouard Lucas and Robert Carmichael.
4 views
Answered