# 523

This number is a prime.

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The largest prime with a prime number of distinct prime
digits. Note that the remaining prime digit 7 when prefixed
(__7__523) or appended (523

__7__) to it forms two other primes, the reversal of whose product is also a prime (15979393) with all of the odd digits. [Beedassy]

Submitted: 2009-09-10 06:03:01; Last Modified: 2009-09-10 20:44:42.

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