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Primes of the form Phi(7,n!), where Phi is the cyclotomic polynomial.
0

%I #6 Aug 28 2015 17:31:39

%S 7,127,55987,

%T 58301791288260114251803544692993535976160443849938371660801

%N Primes of the form Phi(7,n!), where Phi is the cyclotomic polynomial.

%H OEIS Wiki, <a href="https://oeis.org/wiki/Cyclotomic Polynomials at x=n, n! and sigma(n)">Cyclotomic Polynomials at x=n, n! and sigma(n)</a>

%t Select[Table[Cyclotomic[7, n!], {n, 0, 200}], PrimeQ]

%Y Cf. A053716, A200906, A258357, A259264, A259265.

%K nonn

%O 1,1

%A _Robert Price_, Aug 20 2015