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<div><span class="kw">theorem </span><a NAME="T22"><span class="comment"><font color="firebrick">:: NUMBER10:22</font></span><br/></a><div class="add"> <a href="number10.html#K3" title="NUMBER10:func.3">primeindex</a> 2 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a>  <span class="kw">by</span> <span class="lab"><a class="ref" href="number10.html#D4" target="_self" onmouseover="rs('number10/D4')" onmouseout="rh()">Def4</a>, <a class="ref" href="moebius2.html#T8" onmouseover="rs('moebius2/T8')" onmouseout="rh()">MOEBIUS2:8</a></span>;<br/></div></div>
