191

This number is a prime.

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A prime number of spaces are formed if we choose n = 191 distinct points on a circle so that no three of the chords that join them are concurrent. In general, the number is g(n) = (n^4 - 6n^3 + 23n^2 - 18n + 24)/24.

Submitted: 1999-09-02 18:40:00;   Last Modified: 2008-07-31 10:45:26.
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