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Interesting Numbers

  1. Jul 11, 2006 #1
    This is probably in the wrong section. Anyway, McGill's starting an 'undergrad math magazine' in which I want to contribute a little something I came up called 'Crossnumbers' in its recreation section. The idea is really self-explanatory. I've come up with a few 'interesting' integers already, but if you can think up of something, please contribute! :smile:

    The numbers are to be filled in. The clues are on the right. For example:

    999999: The Feynman Point

    1729: Smallest integer expressible as the sum of two cubes in two different ways

    762: The position in the decimal expansion of a certain number at which the Feynman point occurs

    4294967297: First non-prime Fermat number

    7427466391: First ten-digit prime in the decimal expansion of e

  2. jcsd
  3. Jul 13, 2006 #2
    Sounds like fun. Is this going to be a published magazine?
  4. Jul 13, 2006 #3


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    Not true! 0 is expressible as the sum of 2 cubes in 2 different ways, as is -1729, and... :wink:
  5. Jul 13, 2006 #4


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    Ah... but what is the smallest positive non-interesting number?
  6. Jul 13, 2006 #5

    matt grime

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    Come, we all know there is no such thing.
  7. Jul 13, 2006 #6


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    Since the fact that it was the smallest non-interesting number makes it "interesting". (Where "interesting" is defined as "having a property no other number has".)
    Last edited by a moderator: Jul 14, 2006
  8. Jul 13, 2006 #7
    It'll be published and given away for free, for McGill students anyway.
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