A109836 Numbers k such that k^6+6 is prime.

1, 175, 385, 539, 595, 679, 1211, 1225, 1379, 1981, 2219, 2345, 2681, 2891, 3101, 3199, 3395, 3829, 4039, 4249, 4291, 4445, 5201, 5299, 5411, 5509, 5635, 5719, 5761, 5831, 6181, 6391, 6685, 7315, 7469, 7511, 7931, 8435, 9695, 9779, 10451, 10955

Offset: 1

Author

Zak Seidov, Jul 04 2005

Keywords

• nonn

Comments

All terms except the first are divisible by 7.

Programs

PARI

isok(n) = isprime(n^6+6); \\ Michel Marcus, Oct 06 2013