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+ An Eisenstein prime with no imaginary part.

+ The smallest conductor of a rank 2 elliptic curve.

+ The smallest emirp equal the sum of the first two dozen consecutive idoneal numbers. [Loungrides]

+ The first in the smallest set of 4 consecutive primes (389, 397, 401, 409) that are congruent to 1 (mod 4). [Post]

+ The emirp whose common logarithm first exceeds its prime digital root. [Beedassy]

+ The smallest prime (emirp) whose sum of digits is an abundant number. [Loungrides]

(There are 5 curios for this number that have not yet been approved by an editor.)




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