Math Magic Numbers Archive
Reptiles Tiling Packing Touching Graphs Numbers Matrices Chess Games Other
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009

Palindrome Products
(June 1999)

updated 7/7/07

Single Digit Formulas
(December 1999)

updated 12/15/02

Adding Digits Pairwise
(February 2000)

updated 4/26/05

Friedman Numbers
(August 2000)

updated 4/13/09

Power Products
(December 2000)

updated 12/14/00

Getting to Two
(May 2001)

updated 7/1/09

Printer Errors
(June 2001)

updated 6/16/07

Squaring and Striking
(August 2001)

updated 8/31/01

Square Root Approximations
(May 2002)

updated 5/18/02

Squaring and Adding
(August 2003)

updated 11/15/03

Honest Numbers
(December 2003)

updated 1/10/04

Number Constellations
(February 2004)

updated 3/8/04

Strobogrammatic
Expressions
(April 2004)

updated 4/23/06

Small Digit Approximations
(August 2004)

updated 5/15/08

Repeating Blocks
in Squares
(October 2004)

updated 10/31/04

Ambiguous Products
(January 2005)

updated 1/31/05

Substring Iteration
(November 2007)

updated 11/13/07

Nth Powers With N Digits
(March 2008)

updated 3/12/08

Power Problems
(June 2008)

updated 7/29/08

Mathematical Anagrams
(October 2008)

updated 10/28/08

Pandigital Factoring
(April 2009)

updated 4/1/09