This number is a prime.
The smallest emirp that is the sum of the squares of first n Catalan numbers: (1^2 + 2^2 + 5^2 + ... + 16796^2 + 58786^2) for n=11. [Jha]
The smallest emirp that is the sum of the squares of first
n Catalan numbers: (1^2 + 2^2 + 5^2 + ... + 16796^2 +
58786^2) for n=11. [Jha]