This number is a prime.

+ The yellow Union Pacific locomotive No. 9749 is parked on the tracks off Stanley Blvd., between Livermore and Pleasanton, California (6 August 2002). Note that 9749 is prime! [Haga]

+ The only 4-digit emirp that can be represented as sum of three consecutive double-digit squares, i.e., 56^2+57^2+58^2. [Loungrides]

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