OFFSET
1,1
COMMENTS
The next term, if one exists, is >100000. - Robert Price, Apr 25 2011
EXAMPLE
10^2+81=100+81=181 is prime
MATHEMATICA
Select[10^Range[25000] + 81, PrimeQ] (* Alonso del Arte, Dec 27 2010 *)
PROG
(PARI) is(n)=ispseudoprime(10^n+81) \\ Charles R Greathouse IV, Jun 13 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Joseph Stephan Orlovsky, May 06 2008
EXTENSIONS
Added three terms: 2254,2694,24094. Robert Price, Oct 09 2010
a(17)=42081 from Robert Price, Dec 27 2010
a(18)=78632 from Robert Price, Mar 03 2011
STATUS
approved