%I A047828
%S A047828 41037,55694,82083,86662,88982,90177,106221,106562,109838,111388,
%T A047828 123111,134098,168049,173324,177697,177964,179995,195458,207574,213124,
%U A047828 214779,215994,219676,222776,229315,233857,240070,240115,244534,246249
%N A047828 Becomes prime after exactly 9 iterations of f(x) = sum of prime factors 
               of x.
%C A047828 f(x) = sum of prime factors without multiplicity, so that f(1500) = 2+3+5 
               = 10.
%Y A047828 Sequence in context: A097479 A133863 A033532 this_sequence A141711 A074379 
               A027577
%Y A047828 Adjacent sequences: A047825 A047826 A047827 this_sequence A047829 A047830 
               A047831
%K A047828 nonn
%O A047828 1,1
%A A047828 David W. Wilson (davidwwilson(AT)comcast.net)