This number is a prime.

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The smallest emirp that can be represented as sum of the four powers a^a+b^b+c^c+d^d where abcd is a 4-digit prime p, i.e., (p=1433), with 1^1+4^4+3^3+3^3=311. [Loungrides]

Submitted: 2019-07-14 10:40:33;   Last Modified: 2019-07-14 16:31:16.
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