Andy Steward explains what generalized repunits are and gives details on his project of collating all data on factorizations of generalized repunits for bases 2 to 999.

Get access to an archive of factorizations of cyclotomic numbers and get programs on How to Read Cyclotomic Numbers. Includes factorization tools for Linux and Windows.

Provides a list of factors for 2n-1 and 2n+1 for 1200 < n < 10000. Also find info on the Cunningham project, GIMPS, and Brents factor table.

Large table archive lists numbers 1 through 500 that includes a list of factors and the number of factors for each entry. With links to related math resources.

Wilfrid Keller compiles this collection of info on known prime factors and complete factored Fermat numbers. With a table of prime factors and its discoverer's name.

Offers tables of known factorizations of Fibonacci numbers and Lucas numbers. With links to related Fibonacci resources.

Mishima invites new users to join his project to factorize various numbers under 100 digits. See a progress report and a table of factorization results.

Richard Brent offers compressed files that contain factors and composite factors as well as links to related topics including Mersenne primes and Cunningham tables.