

A128448


Numbers n such that 8^n  n^8 is prime.


9




OFFSET

1,2


COMMENTS

From the Lifchitz link: 60681 and 85349 are also in this sequence.  Robert Price, Mar 27 2019


LINKS

Table of n, a(n) for n=1..7.
Henri Lifchitz and Renaud Lifchitz, PRP Records.


MATHEMATICA

lst={}; k=8; Do[If[PrimeQ[Abs[k^nn^k]], AppendTo[lst, n]], {n, 0, 10^4}]; lst (* Vladimir Joseph Stephan Orlovsky, Sep 10 2008 *)


PROG

(PARI) is(n)=isprime(8^nn^8) \\ Charles R Greathouse IV, Feb 17 2017


CROSSREFS

Cf. A072180, A109387, A117705, A117706, A128447, A128449, A128450, A128451, A122003, A128453, A128454.
Sequence in context: A162576 A142166 A140719 * A121155 A201117 A081657
Adjacent sequences: A128445 A128446 A128447 * A128449 A128450 A128451


KEYWORD

hard,more,nonn


AUTHOR

Alexander Adamchuk, Mar 03 2007


EXTENSIONS

Two more terms from Donovan Johnson, Feb 26 2008


STATUS

approved



