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 A088856 Primes p such that cyclotomic(p,p-1) is prime. 2
 2, 3, 7, 127, 8599 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Some of the larger entries may only correspond to probable primes. For p > 2, these are numbers p such that ((p-1)^p - 1)/(p-2) is prime. - Thomas Ordowski, Sep 02 2021 LINKS Eric Weisstein's World of Mathematics, Cyclotomic Polynomial FORMULA a(n) = A101753(n) + 1. - Thomas Ordowski, Sep 02 2021 MATHEMATICA lst={}; Do[p=Prime[n]; If[PrimeQ[Cyclotomic[p, p-1]], AppendTo[lst, p]], {n, 400}]; lst PROG (PARI) isok(p) = isprime(p) && isprime(polcyclo(p, p-1)); \\ Michel Marcus, Sep 02 2021 CROSSREFS Cf. A070519, A070525, A101753. Sequence in context: A182514 A062935 A083436 * A173913 A007013 A103405 Adjacent sequences:  A088853 A088854 A088855 * A088857 A088858 A088859 KEYWORD more,nonn AUTHOR T. D. Noe, Nov 23 2003 STATUS approved

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Last modified May 22 02:18 EDT 2022. Contains 353933 sequences. (Running on oeis4.)