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A291998 Primes of the form Phi(k, -5), where Phi is the cyclotomic polynomial. 1
521, 31, 601, 19531, 12207031, 390001, 305175781, 234750601, 60081451169922001, 152587500001, 10910444855403996246103496881, 59509429687890001, 11293772630057337854244300009061892827351888021, 9080418348371887359375390001, 5465713352000770660547109750601 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[Table[Cyclotomic[k, -5], {k, 0, 100}], PrimeQ[#] &]
CROSSREFS
Cf. A138925.
Sequence in context: A293105 A286977 A225999 * A300395 A139663 A146340
KEYWORD
nonn
AUTHOR
Robert Price, Sep 07 2017
STATUS
approved

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Last modified March 28 07:48 EDT 2024. Contains 371235 sequences. (Running on oeis4.)