7937

This number is a prime.

+ The largest square prime of order 2. See PC1117. [Croll]

+ The largest prime formed by concatenating two double-digit emirps (79, 37). Note that 3779, i.e., the concatenation in order of the same emirps is also prime. [Loungrides]

(There are 3 curios for this number that have not yet been approved by an editor.)

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