The World of Trotter Math is currently in transition from static HTML pages to a Wordpress CMS. We will be upgrading all of the articles over time but this Table of Contents will always be up to date.

Displaying posts categorized under

## Number Theory & Primes

Activities with Number Theory and Primes

## Amicable Numbers

[Note: In another article we presented the concept of Perfect Numbers, and the related two classes of numbers, Deficient and Abundant. If you have not read that one, it would be a good idea to do so now before proceeding here. The topic before us now is a natural extension of that article.] For centuries [...]

## Perfect Numbers et al.

How many perfect people do you know? Or, better, how many perfect people have lived in this world of human beings? Not many, I’m sure you all would agree. Well, the same is true, in a relative sense of the word, in the world of numbers. The ancient Greeks, who held a great reverence for [...]

## Charlene Numbers

The basic concept needed to solve this problem is that of the digit sum of a number. The digit sum of a number is nothing more nor less than the “sum of the digits of a given number.” For example, the digit sum of 283 is 2 + 8 + 3, or 13. To make [...]