<?xml version="1.0"?>
<div><span class="kw">theorem </span><a NAME="T29"><span class="comment"><font color="firebrick">:: NAT_4:29</font></span><br/></a><div class="add">19 is  <a href="int_2.html#V1" title="INT_2:attr.1">prime</a> </div></div>
