Prime Curios!: 13

13
(another Prime Pages' Curiosity)

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The lesser member of the smallest twirp, i.e., a emirp pair such that each member also belongs to a twin prime pair. In this case, the associated primes are 11 and 29. [Green]

Submitted: 2009-12-29 15:15:49; Last Modified: 2009-12-30 06:56:44.