337

This number is a prime.

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The sum of the areas of the rectangles in this Fibonacci paradox: if we divide a 13-by-13 square into four pieces as shown below, they can apparantly be rearranged into the one unit smaller 8-by-21 rectangle.
[Caldwell]

Submitted: 2008-02-09 10:30:50;   Last Modified: 2008-12-22 20:06:07.
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