The Cunningham Project


Introduction to The Cunningham Project

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

The Third Edition of The Cunningham Book.

The Joy of Factoring, a new 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.
Review in CHOICE magazine.
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 June 15, 2015.

The Champions and First Five Holes as of April 21, 2015.

The Main Tables as of December 21, 2015 (897K bytes). This is the latest version. These tables include all factors through # 6346 on Page 131.

Appendix A as of December 21, 2015 (1411K bytes). (The counts of additional primes in the main tables have not been updated.)

Appendix C as of December 21, 2015 (258K bytes).

Extensions to the Cunningham tables.

Page 131 (the latest page).

Page 130 (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), pp. 1449-1461.

Factoring News from Brazil (in Portuguese)


Send e-mail to Sam Wagstaff


(This page last modified February 29, 2016)