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A211874
Primes of the form Phi_k(3), the k-th cyclotomic polynomial evaluated at 3.
1
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
1,1
MATHEMATICA
Sort[Select[Cyclotomic[Range[1000], 3], PrimeQ]]
CROSSREFS
Primes in A019321.
Sequence in context: A127487 A226140 A180003 * A262830 A072060 A106912
KEYWORD
nonn
AUTHOR
Alexander Gruber, Feb 12 2013
STATUS
approved