%I A052021
%S A052021 12,50,70,308,320,364,476,500,605,700,704,715,832,935,1088,1183,1547,
%T A052021 1729,2401,2584,2618,2704,2926,3080,3200,3536,3640,3952,4225,4760,4784,
%U A052021 4913,5000,5491,5525,5819,5831,6050,6175,6517,6647,7000,7040,7150,7475
%N A052021 Sum of digits of n is the largest prime factor of n.
%e A052021 E.g. 13685 has sum of digits '23' and 13685 = 5.7.17.'23'.
%Y A052021 Cf. A052018, A052019, A052020, A052022, A007953, A005349, A028834.
%Y A052021 Sequence in context: A041274 A029586 A081292 this_sequence A052022 A110907 
               A009937
%Y A052021 Adjacent sequences: A052018 A052019 A052020 this_sequence A052022 A052023 
               A052024
%K A052021 nonn,base,nice
%O A052021 0,1
%A A052021 Patrick De Geest (pdg(AT)worldofnumbers.com), Nov 15 1999.