Posted by: Gary Ernest Davis on: January 11, 2011

In a previous post I discussed how 2011 is aÂ prime number and also a sum of consecutive prime numbers. 2011 has another curious property that it shares with 2012, and with 2001 and 2002: Reversing the digits of 2011 we get the number 1102 Squaring 1102 gives us the number 1214404. On the other […]

Posted by: Gary Ernest Davis on: January 5, 2010

This is a joint post of Gary Davis & Glenn Kenyon The issue Glenn recently tweeted: Â Google Search on “Why multiply binomials” yields site on HOW, not WHY. Anyone out there know a reason why that 8th graders can relate to? Searching the Web for a reason why anyone would be even vaguely interested in […]