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15674Cubes + 1

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  • patience_and_fortitude
    Dec 2, 2004
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      Are perfect cubes + 1 ever prime? i.e.:

      Is any number of the form (a^3)+1 ever prime?
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      It seems like there should be eventually...

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      Better yet, is any number of the form (a^q)+1 prime where q is a
      prime other than 2?
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      -Shawn
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