85

This number is a composite.

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The only composite number resulting from the sum of three double-digit consecutive emirps, 17, 31, 37. Note that the ordered concatenation of these emirps, i.e., 173137 is prime. [Loungrides]

Submitted: 2012-06-19 11:20:30;   Last Modified: 2020-06-27 13:37:18.
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