&gt; facts like that two is the smallest prime and the only even one<p>I see the fact that two is the only even prime brought up from time to time as if it&#x27;s inherently interesting.  Why is it more interesting than the identical observation that 37 is the only prime which is a multiple of 37?<p>I guess this bothers me because 2 being the only even prime isn&#x27;t a consequence of the definition of &quot;prime&quot;... it&#x27;s <i>part</i> of the definition.