9

This number is a composite.

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Define a certain number of irregularly marked points, n, along the rim of a paper circle, then cut along straight lines that join all possible pairs of points. If n = 9, a prime number of separate pieces will be created. 163 to be exact!

Submitted: 1999-09-02 18:40:00;   Last Modified: 2011-08-01 12:35:01.
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