OFFSET
1,1
COMMENTS
Conjecture: every number == 1,3,7,9 (mod 10) is a term.
Pseudoprimality, but not primality, checked for some of the larger numbers involved here. - Joshua Zucker, May 11 2006
EXAMPLE
11,113,11317,1131749,... etc. are all prime.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Aug 02 2005
EXTENSIONS
More terms from Joshua Zucker, May 11 2006
STATUS
approved