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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
OFFSET
1,1
MATHEMATICA
Select[Table[Cyclotomic[k, 5], {k, 0, 100}], PrimeQ[#] &]
CROSSREFS
Cf. A138935.
Sequence in context: A074218 A161395 A215610 * A086122 A239167 A263585
KEYWORD
nonn
AUTHOR
Robert Price, Sep 07 2017
STATUS
approved