11

This number is a prime.

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11 is the smallest number of sides of a regular polygon that cannot be packed about a point with other regular polygons. E.g., a 7-sided polygon packs with a 42-sided polygon and a triangle. [Astle]

Submitted: 2004-09-02 10:23:23;   Last Modified: 2008-01-30 11:28:00.
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