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 A046518 Numbers with multiplicative persistence value 9. 3
 26888999, 26889899, 26889989, 26889998, 26898899, 26898989, 26898998, 26899889, 26899898, 26899988, 26988899, 26988989, 26988998, 26989889, 26989898, 26989988, 26998889, 26998898, 26998988, 26999888, 28688999 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS David A. Corneth, Table of n, a(n) for n = 1..10000 (first 1000 terms from Robert Israel) Eric Weisstein's World of Mathematics, Multiplicative Persistence EXAMPLE 26888999 -> [ 4478976 ][ 338688 ][ 27648 ][ 2688 ][ 768 ][ 336 ][ 54 ][ 20 ][ 0 ] -> one digit in nine steps. MAPLE mp:= proc(n) option remember;     if n <= 9 then return 0 fi;     1+procname(convert(convert(n, base, 10), `*`)) end proc: filter:= proc(n)   evalb(mp(convert(convert(n, base, 10), `*`))=8) end proc: select(filter, [\$26111111..29999999]); # Robert Israel, Feb 12 2019 CROSSREFS Cf. A003001, A014120, A046509. Sequence in context: A205767 A086129 A121109 * A199999 A046509 A327281 Adjacent sequences:  A046515 A046516 A046517 * A046519 A046520 A046521 KEYWORD nonn,easy,base AUTHOR Patrick De Geest, Sep 15 1998 EXTENSIONS Offset corrected by Robert Israel, Feb 12 2019 STATUS approved

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Last modified May 15 12:37 EDT 2021. Contains 343920 sequences. (Running on oeis4.)