| Brilliant Numbers: Tables of maximal and minimal numbers with two, three or four prime factors of the same length (in decimal notation). |
| Cunningham Project: 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. |
| Factor Tables: 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. |
| Factorization of Cyclotomic Numbers: Hisanori Mishima is coordinating the search and producing tables of factorizations of cyclotomic numbers for values of phi(n) less than 48. |
| Factorization Results: Tables, summaries, and links to many factoring endeavors, including primorials, factorials, and cyclotomic polynomials. Includes theorems and descriptions behind each project. |
| Factorizations of Repunit Numbers: Tables available in text and compressed format. |
| Factors: Lists the factors of every single number up to 600, for quick reference and as a resource for students. |
| Factors of 2^n + or - 1: Factorizations for values of n up to 10000, extending the results of the Cunningham Project. |
| Factors of Modified Fermat Numbers: Factors of numbers of the form 4^(3^n)+2^(3^n)+1 and 4^(3^n)-2^(3^n)+1. |
| Factors of Numbers near Googolplex: 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. |
| Fermat Factoring Status: Compiled by Wilfrid Keller, lists the known prime factors and complete factorizations of Fermat numbers. |
| Fibonacci and Lucas Factorizations: Tables of known factorizations of the first 10,000 Fibonacci and Lucas numbers. |
| Prime Factorization of Cyclotomic Numbers: Factor tables of cyclotomic numbers for values of phi(n) up to 120 by Mitsuo Morimoto. |
| Repunit Primes and Factors: Factors of 10^n +- 1 for n<1000. |
Classical
