

A133982


Numbers n such that 11^n  2 is prime.


3




OFFSET

1,1


COMMENTS

Corresponding primes are in A133858.
11^224202 is a 23349digit probable prime found with PrimeForm.
a(8) > 10^5.  Robert Price, Mar 26 2014
a(4) through a(7) also correspond to probable primes.  Robert Price, Mar 27 2014


LINKS

Table of n, a(n) for n=1..7.


PROG

(PARI) is(n)=ispseudoprime(11^n2) \\ Charles R Greathouse IV, May 22 2017


CROSSREFS

Cf. A133858, A130652.
Sequence in context: A054264 A077305 A146294 * A069179 A336764 A058377
Adjacent sequences: A133979 A133980 A133981 * A133983 A133984 A133985


KEYWORD

hard,nonn,more


AUTHOR

Rick L. Shepherd, Sep 30 2007


EXTENSIONS

a(4)a(7) from Robert Price, Mar 26 2014


STATUS

approved



