This number is a prime.
The smallest prime (emirp) that is the sum of the first n centered hexagonal numbers (1^3+7^3+19^3+37^3+61^3+91^3+127^3). [Bajpai]
The smallest prime (emirp) that is the sum of the first n centered hexagonal numbers (1^3+7^3+19^3+37^3+61^3+91^3+127^3). [Bajpai]