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The first occurrence of a sexy quadruplet (p, p + 6, p + 12, p + 18) of consecutive emirps: (1091, 1097, 1103, 1109). Note that the end terms are consecutive invertible primes whose digits are mere cyclic permutations of each other. [Beedassy]

 

  Submitted: 2010-01-24 07:48:05;   Last Modified: 2010-01-24 09:04:52.



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