This number is a prime.
The smallest Honaker prime P that is the sum of the squares of first n semiprimes, i.e., (4^2+6^2+9^2+...+123^2+129^2), (case n=43). Curiously, P is also expressible as the sum of squares: (382^2+307^2). [Bajpai]
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell