7523
This number is a prime.
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The only derangement of the prime 2357 that is an emirp. Note that the concatenation of both primes (23577523) and their reversals (75323257) forms other primes. [Beedassy]
Submitted: 2009-09-22 18:36:56; Last Modified: 2009-09-22 19:29:11.
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