The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60th year, we have over 367,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A178203 Smith numbers of order 5; composite numbers n such that sum of digits^5 equal sum of digits^5 of its prime factors without the numbers in A176670 that have the same digits as its prime factors (without the zero digits). 5
 414966, 443166, 454266, 1274664, 1371372, 1701856, 1713732, 1734616, 1771248, 1858436, 1858616, 2075664, 2624976, 3606691, 3771031, 3771301, 4266914, 4414866, 4461786, 4605146, 4670576, 4710739, 5209663, 5281767, 5434572, 5836565, 5861712, 5871968, 6046357 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Donovan Johnson, Table of n, a(n) for n = 1..1000 Patrick Costello, A new largest Smith number, Fibonacci Quarterly 40(4) (2002), 369-371. Underwood Dudley, Smith numbers, Mathematics Magazine 67(1) (1994), 62-65. S. S. Gupta, Smith Numbers, Mathematical Spectrum 37(1) (2004/5), 27-29. S. S. Gupta, Smith Numbers. Eric Weisstein's World of Mathematics, Smith number. Wikipedia, Smith number. A. Wilansky, Smith Numbers, Two-Year College Math. J. 13(1) (1982), p. 21. Amin Witno, Another simple construction of Smith numbers, Missouri J. Math. Sci. 22(2) (2010), 97-101. Amin Witno, Smith multiples of a class of primes with small digital sum, Thai Journal of Mathematics 14(2) (2016), 491-495. EXAMPLE a(10) = 1858436 = 2*2*29*37*433; 1^5 + 3^5 + 4^5 + 5^5 + 6^5 + 2*8^5 = 3*2^5 + 3*3^5 + 4^5 + 7^5 + 9^5 = 77705. CROSSREFS Cf. A006753 (Smith numbers), A176670, A174460, A178213, A178193, A178204. Sequence in context: A256732 A078519 A187171 * A152869 A251960 A234663 Adjacent sequences: A178200 A178201 A178202 * A178204 A178205 A178206 KEYWORD nonn,base AUTHOR Paul Weisenhorn, Dec 19 2010 EXTENSIONS a(21) corrected by Donovan Johnson, Jan 02 2013 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 8 15:23 EST 2023. Contains 367680 sequences. (Running on oeis4.)