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The first occurrence of a twin prime pair (6089,6091) that both consist of a nonprime number of nonprime digits only. Note that the larger member is an invertible prime which turned upside down corresponds also to the larger member (1609) of a twin prime pair. [Beedassy]

 

  Submitted: 2009-01-01 03:32:00;   Last Modified: 2009-01-01 11:17:47.



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