

A128451


Numbers n such that absolute value of 11^n  n^11 is prime.


8




OFFSET

1,1


COMMENTS

Two larger terms 13674 and 16094 found by Donovan Johnson, Jul 2005.


LINKS

Table of n, a(n) for n=1..9.


MATHEMATICA

lst={}; k=11; 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)=ispseudoprime(abs(11^nn^11)) \\ Charles R Greathouse IV, Feb 17 2017


CROSSREFS

Cf. A072180, A109387, A117705, A117706, A128447, A128448, A128449, A128450, A122003, A128453.
Sequence in context: A268160 A236553 A050582 * A177170 A275006 A219778
Adjacent sequences: A128448 A128449 A128450 * A128452 A128453 A128454


KEYWORD

hard,more,nonn,less


AUTHOR

Alexander Adamchuk, Mar 03 2007


EXTENSIONS

a(6)a(8) from Donovan Johnson, Feb 26 2008
a(9) discovered by Serge Batalov, entered by Robert Price, Apr 11 2019


STATUS

approved



