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  1. Added Mar 12, 2007 by aseldow
    What makes a number cool? I think a word that sums up the key characteristic of cool numbers is "canonicality." Numbers that appear in this list should be somehow fundamental to the nature of mathematics. They could represent a fundamental fact or theorem of mathematics, be the first instance of an amazing class of numbers, be omnipresent in modern mathematics, or simply have an eerily long list of interesting properties.
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