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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E10">T51</font></span>: <a NAME="T12"><span class="comment"><font color="firebrick">:: NUMBER12:12</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">n</font> being   non  <a href="ordinal1.html#V8" title="ORDINAL1:attr.8">zero</a>  <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a> holds  <font color="Olive" title="b1">n</font> <a href="nat_d.html#K6" title="NAT_D:func.6">gcd</a> <span class="p1">(<span class="default"><a href="pepin.html#K4" title="PEPIN:func.4">Fermat</a> <font color="Olive" title="b1">n</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1</div></div>
