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Search: id:A052022
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| A052022 |
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Smallest number m such that n-th prime p = sum of digits of m and p = largest prime factor of m (or 0 if no such number exists). |
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+0
7
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| 12, 50, 70, 308, 364, 476, 1729, 4784, 9947, 8959, 38998, 588965, 179998, 1879859, 5988788, 38778989, 79693999, 287978998
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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p=43 -> a(13)=179998 -> 1+7+9+9+9+8 = '43' and 179998 = 2.7.13.23.'43'. p=47 -> a(14)=1879859 -> 1+8+7+9+8+5+9 = '47' and 1879859 = 23.37.47.'47'.
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CROSSREFS
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Cf. A052018, A052019, A052020, A052021, A007953, A005349, A028834.
Sequence in context: A029586 A081292 A052021 this_sequence A110907 A009937 A009932
Adjacent sequences: A052019 A052020 A052021 this_sequence A052023 A052024 A052025
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KEYWORD
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nonn,base,nice
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com), Nov 15 1999.
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EXTENSIONS
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Does there exist a solution for every prime p?
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