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<div><span class="kw">theorem </span><span class="lab"><font color="Green" title="E93">Th51</font></span>: <a NAME="T51"><span class="comment"><font color="firebrick">:: NUMBER09:51</font></span><br/></a><div class="add"> for <font color="Olive" title="b1">n</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a>  holds <br/>( <span class="p1">(<span class="default"><font color="Olive" title="b1">n</font> <a href="pepin.html#K1" title="PEPIN:func.1">^2</a></span>)</span> <a href="int_1.html#K5" title="INT_1:func.5">mod</a> 8 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a>  <a href="numbers.html#K5" title="NUMBERS:func.5">0</a>  or <span class="p1">(<span class="default"><font color="Olive" title="b1">n</font> <a href="pepin.html#K1" title="PEPIN:func.1">^2</a></span>)</span> <a href="int_1.html#K5" title="INT_1:func.5">mod</a> 8 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 or <span class="p1">(<span class="default"><font color="Olive" title="b1">n</font> <a href="pepin.html#K1" title="PEPIN:func.1">^2</a></span>)</span> <a href="int_1.html#K5" title="INT_1:func.5">mod</a> 8 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 4 )</div></div>
