OFFSET
1,1
LINKS
Makoto Kamada, Factorizations of 11...113.
MATHEMATICA
FactorInteger[#][[1, 1]]&/@Select[Table[FromDigits[PadLeft[{3}, n, 1]], {n, 60}], !PrimeQ[#]&] (* Harvey P. Dale, Jun 04 2012 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Lekraj Beedassy, Apr 08 2005
STATUS
approved