This number is a prime.

+ 1381^(1+3+8+1)-(1+3+8+1)! is prime. [Silva]

+ 1381 and its reversal are the first pair of emirps that are both super-2 primes. Can you find another such pair? [Loungrides]

(There is one curio for this number that has not yet been approved by an editor.)

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