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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