A211874 Primes of the form Phi_k(3), the k-th cyclotomic polynomial evaluated at 3.

2, 7, 13, 61, 73, 547, 757, 1093, 4561, 6481, 368089, 398581, 530713, 797161, 42521761, 47763361, 2413941289, 23535794707, 282429005041, 374857981681, 144542918285300809, 150094634909578633, 13490012358249728401, 82064241848634269407

Offset: 1

Author

Alexander Gruber, Feb 12 2013

Keywords

• nonn

Crossrefs

Primes in A019321.

Cf. A138933, A072226, A153601.

Programs

Mathematica

Sort[Select[Cyclotomic[Range[1000], 3], PrimeQ]]