New Question... Does anyone know if there's a term for "semi palindromic" between two numbers? Eg. 155 and 551. They aren't in and of themselves palindromic, but they are "mirrored". My interest in these numbers is that they are vastly different numerically, yet they have identical digit sums.
@Tyler H
Pardon my ambiguity, but I prefer to remain veiled in my description of this relationship in hopes it may be something new. However, to define the term "counterpart" I can provide some clarity. Let's say I start with the number 1234, and then I do some manner of manipulation to this...
I apologize for my lack of knowledge on the topic.
I recently started writing programs to solve Project Euler problems and it rekindled my interest in number theory. Especially as it relates to a peculiar relationship I found back in high school. I would like to learn more about number theory...