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 23:40:00; Last Modified: 2011-08-01 17:35:01.
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