This number is a prime.

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The only emirp less than a googol that can be represented as the product of a repdigit number consisting of 5's and all its truncations minus 2, i.e., 555*55*5-2. Note that there is another such prime only, less than a googol, with the same property. [Loungrides]

Submitted: 2016-11-01 08:07:21;   Last Modified: 2018-04-24 06:43:20.
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