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A291991 Primes of the form Phi(k, -9), where Phi is the cyclotomic polynomial. 1
73, 530713, 6481, 47763361, 42521761, 150094634909578633, 13490012358249728401, 282429005041, 19966781110160346782368664772328944885905284750420567849, 1076050302914923449767311155851656076154481 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

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

MATHEMATICA

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

CROSSREFS

Cf. A138921.

Sequence in context: A232307 A232457 A262662 * A188957 A159438 A291992

Adjacent sequences:  A291988 A291989 A291990 * A291992 A291993 A291994

KEYWORD

nonn

AUTHOR

Robert Price, Sep 07 2017

STATUS

approved

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Last modified July 4 20:08 EDT 2022. Contains 355086 sequences. (Running on oeis4.)