目录一、前言二、完全数是什么1、定义2、规律3、梅森素数三、版本（1.0）:硬算四、版本1.1:数的末尾侦测五、版本1.2:除以9侦测六、版本2.0:梅森素数侦测一、前言
we\'re working on a peer to peer comm software that would allow a number of grocery stores to sync their inventory with what we call \"headquarters\".
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