A291991 Primes of the form Phi(k, -9), where Phi is the cyclotomic polynomial.

73, 530713, 6481, 47763361, 42521761, 150094634909578633, 13490012358249728401, 282429005041, 19966781110160346782368664772328944885905284750420567849, 1076050302914923449767311155851656076154481

Offset: 1

Author

Robert Price, Sep 07 2017

Keywords

• nonn

Links

• Robert Price, Table of n, a(n) for n = 1..13
• Yves Gallot, Cyclotomic polynomials and prime numbers
• Index entries for cyclotomic polynomials,values at X

Crossrefs

Cf. A138921.

Programs

Mathematica

Select[Table[Cyclotomic[k,-9], {k, 0, 100}], PrimeQ[#] &]