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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A096867 Records in A068189 (smallest number k such that n = product of nonzero digits of k, or 0 if no such k exists). 3

%I #13 Apr 10 2021 22:29:00

%S 1,2,3,4,5,6,7,8,9,25,26,27,35,45,55,56,57,58,67,68,77,255,256,257,

%T 355,455,555,556,557,558,567,568,577,2555,2556,2557,3555,4555,5555,

%U 5556,5557,5558,5567,5568,5577,25555,25556,25557,35555,45555,55555,55556

%N Records in A068189 (smallest number k such that n = product of nonzero digits of k, or 0 if no such k exists).

%C Numbers n such that A068189(n) is a record are given in A096868.

%C Also records in A280249. - _David A. Corneth_, Apr 08 2021

%H David A. Corneth, <a href="/A096867/b096867.txt">Table of n, a(n) for n = 1..1707</a> (terms < 10^100)

%e Product of nonzero digits of 257 is 70, for n < 70 the smallest number k such that n = product of nonzero digits of k (or 0 if no such k exists) is at most 256, hence 257 is a record.

%Y Cf. A068189, A096868, A280249.

%K nonn,base

%O 1,2

%A _Klaus Brockhaus_, Jul 13 2004

%E Incorrect formula removed by _David A. Corneth_, Apr 10 2021

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)