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<b>thus </b> <a href="pepin.html#K5" target="_self">Fermat</a> 3 = 
<span class="p1">(<span class="default">2 <a href="wsierp_1.html#K2">|^</a> <span class="p2">(<span class="default">4 <a href="nat_1.html#K1">+</a> 4</span>)</span></span>)</span> <a href="nat_1.html#K1">+</a> 1
<b>by </b><i><a class="txt" href="pepin.html#E22"><i><font color="Green">Lemma18</font></i></a></i>
<br/>.= 
<span class="p1">(<span class="default"><span class="p2">(<span class="default">2 <a href="wsierp_1.html#K2">|^</a> 4</span>)</span> <a href="nat_1.html#K2">*</a> <span class="p2">(<span class="default">2 <a href="wsierp_1.html#K2">|^</a> 4</span>)</span></span>)</span> <a href="nat_1.html#K1">+</a> 1
<b>by </b><i><a class="ref" href="newton.html#T13">NEWTON:13</a></i>
<br/>.= 
257
<b>by </b><i><a class="txt" href="pepin.html#E23"><i><font color="Green">Lemma19</font></i></a></i>
;<br/>


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