Palindromic number records

A 53-digit Palindromic Square Number:

122063831551139898460740721 ^ 2 = 14899578972945056149893218681239894165054927987599841

http://blogs.msdn.com/b/fyuan/archive/2008/01/15/a-53-digit-palindromic-square-number.aspx

Other palindromic number records can be found at

http://www.worldofnumbers.com/palrecs.htm

http://www.worldofnumbers.com/square.htm