Tables of maximal and minimal numbers with two, three or four prime factors of the same length (in decimal notation).

Current status of the project to factor numbers of the form b^n +/- 1, b = 2, 3, 5, 6, 7, 10, 11, and 12. Maintained by Samuel S. Wagstaff, jr.

Richard Brent's tables extend the scope of the Cunningham project (factoring b^n+-1) to all applicable bases b less than 100, plus some higher bases.

Hisanori Mishima is coordinating the search and producing tables of factorizations of cyclotomic numbers for values of phi(n) less than 48.

Tables, summaries, and links to many factoring endeavors, including primorials, factorials, and cyclotomic polynomials. Includes theorems and descriptions behind each project.

Tables available in text and compressed format.

Lists the factors of every single number up to 600, for quick reference and as a resource for students.

Factorizations for values of n up to 10000, extending the results of the Cunningham Project.

Factors of numbers of the form 4^(3^n)+2^(3^n)+1 and 4^(3^n)-2^(3^n)+1.

This table includes all known prime factors of the numbers in the range 10^(10^100) to 10^(10^100)+999, including more than 57000 prime factors of googolplex + 10.

Compiled by Wilfrid Keller, lists the known prime factors and complete factorizations of Fermat numbers.

Tables of known factorizations of the first 10,000 Fibonacci and Lucas numbers.

Factor tables of cyclotomic numbers for values of phi(n) up to 120 by Mitsuo Morimoto.

Factors of 10^n +- 1 for n<1000.