This number is a prime.
The smallest emirp that is the sum of the squares of first n odd primes (3^2+5^2+7^2+...+1283^2+1289^2+1291^2). [Bajpai]
The smallest emirp that is the sum of the squares of first
n odd primes (3^2+5^2+7^2+...+1283^2+1289^2+1291^2). [Bajpai]