Why a Number Is Prime

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Uploaded by on Jul 10, 2009

http://demonstrations.wolfram.com/WhyANumberIsPrime/

The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily.

Move the n slider to see that if n is a prime number, n squares cannot be arranged into a rectangular array unless the width or length is 1. That is, it is not possible to represent a prime as the product of two integers a◊b with a, bgt1.

Contributed by: Enrique Zeleny

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