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<div>:: <span class="kw">deftheorem </span>   defines <a href="gr_cy_3.html#K1" title="GR_CY_3:func.1">Mersenne</a> <a onclick="hs(this)" href="javascript:()">GR_CY_3:def 3 : <br/></a><span> for <font color="Olive" title="b1">n</font> being   <a href="ordinal1.html#NM6" title="ORDINAL1:NM.6">Nat</a> holds   <a href="gr_cy_3.html#K1" title="GR_CY_3:func.1">Mersenne</a> <font color="Olive" title="b1">n</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1">(<span class="default">2 <a href="newton.html#K1" title="NEWTON:func.1">|^</a> <font color="Olive" title="b1">n</font></span>)</span> <a href="xcmplx_0.html#K6" title="XCMPLX_0:func.6">-</a> 1;<br/></span></div>
