Collection of instructional pages helps visitors learn number theory. Get info and examples on number base change, Euler's theorem, and Mersenne Prime.

Get examples and descriptions on 1 and prime numbers, Fermat's theorem, neighborhoods in plane networks, and elements of physics.

Research consultant at the University of Queensland provides this large collection of number theory links including biographies, prizes, lectures, and photos.

Resource focuses on the history of mathematics and presents this offering of links to number theory, prime numbers, and Fermat's last theorem.

Access a collection of manuscripts by this mathematics professor. Find a history of valuation theory and the origin and development of class field theory.

Presents a long list of problems and discussions for number theory topics including rounding up to pi, Zeisel numbers, Barlow's observation, and sums of three cubes.

Trinity College Library hosts this database of modern manuscript collections by type. Get publication information for mathematicians, economists, and authors.

Find an up-to-date listing of knowledge about multiply-perfect numbers, or those integers which evenly divide the sum of all their divisors.

Presents facts and examples of relative congruence, an index of paper manuscript in details, and discussion on the development of the concept of congruence.

Find a searchable collection of integer sequences organized by values, keywords or discoverers. Includes formulas and literature references.

Guide presents tidbits and trivia about integers, prime numbers, and factorization. Click on a number to learn facts about it.