Factors - Lists the factors of every single number up to 600, for quick reference and as a resource for students. 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. 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. Brilliant Numbers - Tables of maximal and minimal numbers with two, three or four prime factors of the same length (in decimal notation). 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. Factorizations of Repunit Numbers - Tables available in text and compressed format.