Definitions and references.
Status of various factorisations that would extend the known area of non-existence of odd perfect numbers, by Kevin Hare.
Aliquot sequences arise in iterating the sum-of-divisors function s. Bosma has calculated tables up to start value 50,000 and 80 digits.
Harry J. Smith's pages of the mathematics behind perfect numbers, aliquot sequences and Mersenne numbers. Includes program listings and e-mail archives.
Statistics by Wolfgang Creyaufmueller, including many tables and links to factoring sites and software.
|