The following is a calculator that computes the known prime factors of the numbers b^n +/- 1 where b = 2,3,4,5,6,7,8,9,10,11,12. Use it in the following way: Enter the base b in the first textfield, then enter the power in the second one and finally enter +1 or -1. The result will appear shortly after that. For more information about the applet please contact me at

The applet works with the following files using an URL connection:

appa599.html           10-Aug-99 15:36   562k  (Appendix A)

appc599.html           19-Aug-99 11:47   203k  (Appendix C)

cun.html               23-Aug-99 09:10   408k  (Main Tables)

If you are interested in The Cunningham Project, you can learn more about it here:

Created by Boyan Botev, Aug 1999