This number is a prime.

Just showing those entries submitted by 'Post': (Click here to show all)

+ The recently published AINUR (the Atlas of Images of Nuclear Rings) in the journal Monthly Notices of the Royal Astronomical Society covers 113 nuclear rings in 107 [also prime] different galaxies. [Post]

+ The number of associative binary operations on an 3-set, or the number of labeled semigroups with 3 elements. [Post]

+ 113 is the smallest emirp whose sum of digits is prime. [Post]

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

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