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<div><span class="kw">theorem </span><a NAME="T17"><span class="comment"><font color="firebrick">:: GR_CY_3:17</font></span><br/></a><div class="add"> <a href="gr_cy_3.html#K1" title="GR_CY_3:func.1">Mersenne</a> 1 <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> 1 ;<br/></div></div>
