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A292009 Primes of the form Phi(k, 5), where Phi is the cyclotomic polynomial. 1
31, 19531, 521, 12207031, 601, 305175781, 390001, 234750601, 177635683940025046467781066894531, 152587500001, 227376585863531112677002031251, 59509429687890001, 11735415506748076408140121, 9080418348371887359375390001, 60081451169922001 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Price, Table of n, a(n) for n = 1..32

Yves Gallot, Cyclotomic polynomials and prime numbers

Index entries for cyclotomic polynomials,values at X

MATHEMATICA

Select[Table[Cyclotomic[k, 5], {k, 0, 100}], PrimeQ[#] &]

CROSSREFS

Cf. A138935.

Sequence in context: A074218 A161395 A215610 * A086122 A239167 A263585

Adjacent sequences:  A292006 A292007 A292008 * A292010 A292011 A292012

KEYWORD

nonn

AUTHOR

Robert Price, Sep 07 2017

STATUS

approved

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Last modified September 17 14:07 EDT 2021. Contains 347478 sequences. (Running on oeis4.)