Algorithm Design Manual - Number Theoretic Algorithms - A chapter from "The Algorithm Design Manual" by Steven S. Skiena. Implementations of Extended LLL - Links and notes by Wilberd van der Kallen. Some Number Records - Connected with divisibility and factoring. Future Directions in Algorithmic Number Theory - Some of the conjectures and open problems motivated by the "PRIMES is in P" papers, compiled at the AIM. LLL Page - Maintained by Keith Matthews. Papers, examples, pseudocode. Visible Euclidean Algorithm - Enter two positive integers, and click the button to see the operations of the Euclidean Algorithm. Computational Projects in Number Theory - Interesting problems, usually requiring extensive verifications or enumerations, to occupy the idle CPU time of workstations and personal computers. Compiled by Tomás Oliveira e Silva.