This number is a prime.

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163 and 631 are two primes consisting of the same distinct digits, (1, 3, 6), such that one of these digits is twice the product of the other two, i.e., 6 = 2*(1*3). Note that a concatenation of these primes creates a Cyclops prime, i.e., 6310163. [Loungrides]

Submitted: 2013-05-26 17:33:20;   Last Modified: 2020-07-27 17:42:18.
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