Archives of postings to the Number Theory mailing list (NMBRTHRY).

A group for aggregating all the known properties of Fermat Numbers F(m)=2^2^m+1 in one place. Links to distributed search and lists. Archive available to non-members.

Discussion list for the Goldbach Conjecture.

Mailing list covering recreational and serious aspects. [Requires free Yahoo membership.]

Discussion group for the primality-testing program, PrimeForm. Includes links to the PrimeForm program's home page, contact and download information.

Discussion list for those who enjoy prime numbers, primality testing, and closely related subjects.

Devoted to the study of integer sequences.

Maintained by Jim Propp.