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11675RE: [PrimeNumbers] Isomorphic Numbers

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  • Phil Carmody
    Mar 5, 2003
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      --- Jon Perry <perry@...> wrote:
      > 'Are the two elements supposed to be distinct? Jon doesn't state
      > that in his first post today.'
      > This wasn't a condition in the original discussion, indeed we have 4+4=8,
      > 4*4+1=17, same for 2.

      You seem back-to-front, Jon.

      8 is composite, 17 is prime and {1,2,3,4,5} was provided as a solution.
      Therefore the condition that the pair's elements are distinct _was_ a
      condition in the first one?
      If it wasn't a condition, then {1,2,3,4,5} wouldn't have been a solution.

      > For stringency this could be added, although graphs with loops are frowned
      > at...

      Nope, trees and forests with loops are frowned upon (and any other DAGs, of


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