This number is a prime.

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The smallest emirp consisting of invertible digits that can be represented as the sum of two consecutive squares, 9661 = 69^2 + 70^2. Note that the concatenation of these numbers, i.e., 7069, is prime. [Loungrides]

Submitted: 2014-09-10 12:50:19;   Last Modified: 2020-02-22 21:21:46.
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