A292009 Primes of the form Phi(k, 5), where Phi is the cyclotomic polynomial.

31, 19531, 521, 12207031, 601, 305175781, 390001, 234750601, 177635683940025046467781066894531, 152587500001, 227376585863531112677002031251, 59509429687890001, 11735415506748076408140121, 9080418348371887359375390001, 60081451169922001

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