%I #6 Oct 04 2012 10:28:58
%S 68889,27648,2688,768,336,54,20,0
%N Trajectory of 68889 under "x > product of digits of x" map.
%C This is the smallest number of persistence 7 (cf. A003001).
%H N. J. A. Sloane, <a href="http://neilsloane.com/doc/persistence.html">The persistence of a number</a>, J. Recreational Math., 6 (1973), 9798.
%Y Cf. A003001.
%K nonn,fini,full,base
%O 1,1
%A _N. J. A. Sloane_, Aug 12 2006
%E Edited by _Charles R Greathouse IV_, Aug 06 2010
