# 1117

This number is a prime.

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The smallest prime formed by concatenating the smaller
members of two successive twin prime pairs: {(__11__,
13) ; (__17__, 19)}. Note that the reverse concatenation
of the larger members forms an emirp (1913), and that
similar properties hold for the two successive twin prime
pairs {(101, 103) ; (107, 109)} : 101107 is prime while
109103 is an emirp. [Beedassy]

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