A121107 Trajectory of 68889 under "x -> product of digits of x" map.

68889, 27648, 2688, 768, 336, 54, 20, 0

Offset: 1

Author

N. J. A. Sloane, Aug 12 2006

Keywords

• nonn
• fini
• full
• base

Comments

This is the smallest number of persistence 7 (cf. A003001).

Links

• N. J. A. Sloane, The persistence of a number, J. Recreational Math., 6 (1973), 97-98.

Crossrefs

Cf. A003001.

Extensions

Edited by Charles R Greathouse IV, Aug 06 2010