A Revisit of Carmichael Numbers and a Note on Carmichael Triplets
摘要
In this article, we revisit Carmichael numbers that are answers to the converse of Fermat’s little theorem. We take a slightly different constructive path from that of R D Carmichael in arriving at the first Carmichael number 561. We introduce Carmichael triplets and pose some interesting questions regarding the same.