The Cunningham Project

Introduction to The Cunningham Project

Explanation of the notation on the Pages and the Champion Page.

The Known Mersenne Primes
The Largest Known Primes

The Fermat Prime Divisors ( A new link in 2017)

The Third Edition of The Cunningham Book.

Paul Leyland's Cullen and Woodall pages.

The Joy of Factoring, a factoring book. The book cover. The triplets are Purdue fans. Some corrections and comments.
Review at Math Reviews.
Review at Math Assn of America.
Review at mersenneforum.
According to AMS' twitter feed, The Joy of Factoring was selected as a 2014 CHOICE magazine Outstanding Academic Title.

Press release for the 2012 discovery of 75- and 79-digit primes by the Elliptic Curve Method.

The "Wanted" lists issued May 20, 2023

The Champions and First Five Holes as of May 20, 2023

Several tables have been extended and included in the regular tables. The Main Tables as of April 17, 2023. This is the latest version. These tables include all factors through # 6697 on Page 143.

Appendix A as of April 17, 2023. (The counts of additional primes in the main tables have not been updated.)

Appendix C as of April 17, 2023.

Page 144 (the latest page).

Page 143 (the previous page).

Who is factoring which number now.

Old Pages

Paper "The Search for Aurifeuillian-Like Factorizations" which appeared in the journal Integers vol. 12A (2012), Art. A16

Send e-mail to Sam Wagstaff

(This page last modified May 22, 2023)