1487

This number is a prime.

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1487 and its reversal 7841 is the first distinct-digit pair of emirps that are both super-2 primes, i.e., 2*1487^2 = 4422338 and 2*7841^2 = 122962562. [Loungrides]

Submitted: 2020-06-02 11:27:43; Last Modified: 2020-06-02 14:39:58.