iOS Users: Please click here for the latest information: (updated 5.10.2016)
Say It Right Series


Posted by Joachim September 28, 2010 in the Group General Discussion.


Today would be the 2561st birthday of Kongzi.

What a number to celebrate!

[2561 is the hypotenuse of 2 primitive Pythagorean triples: 2561^2 = 639^2+2480^2 = 1311^2+2200^2]

More here

Comments (0) RSS

loading... Updating ...

To comment, please login.

Not sure if your comment is appropriate? Check our Commenting Policy first.

New lesson idea? Please contact us.