# 11

This number is a prime.

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Golomb proved that *n*/π(

*n*) takes on all integer values

*k*> 1 at least once. Currently,

*k*=11 is the only number known for which there is exactly one solution. [Caldwell]

Submitted: 2008-04-02 18:15:29; Last Modified: 2008-04-02 21:41:53.

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