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A103124
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1/5-Smith Numbers.
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1
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399996663, 666609999, 669969663, 690696969, 699966663, 2789929969, 3066999963, 3366339999, 3366999933, 3399696663, 3399996633, 3666699663, 3669933993, 3933969693, 6066690999, 6069996663, 6099996633, 6393996933, 6399636963, 6666009999, 6669669633, 6966939633
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| McDaniel, W. L., "The Existence of infinitely Many k- Smith numbers", Fibonacci Quarterly, 25(1987), pp. 76-80.
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LINKS
| S. S. Gupta, Smith Numbers.
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EXAMPLE
| 399996663 is a 5^(-1) Smith number because digit sum of 399996663 i.e. S(399996663) = 3 + 9 + 9 + 9 +9 + 6 + 6 + 6 + 3=60, which is equal to 5 times the sum of the digits of its prime factors i.e.5x Sp (399996663) =5 x Sp (3 x 11 x 101 x 120011) = 5 x( 3 + 1 + 1+ 1 + 0 + 1 + 1 + 2 + 0+ 0 + 1 + 1) = 60.
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CROSSREFS
| Cf. A006753.
Sequence in context: A103773 A172602 A108212 * A038132 A101770 A186795
Adjacent sequences: A103121 A103122 A103123 * A103125 A103126 A103127
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KEYWORD
| base,nonn
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AUTHOR
| Shyam Sunder Gupta (guptass(AT)rediffmail.com), Mar 16 2005
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EXTENSIONS
| a(6)-a(22) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Sep 20 2011
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