A121110 Trajectory of 3778888999 under "x -> product of digits of x" map.

3778888999, 438939648, 4478976, 338688, 27648, 2688, 768, 336, 54, 20, 0

Offset

1,1

Comments

This is the smallest number of persistence 10 (cf. A003001).

Links

Table of n, a(n) for n=1..11.

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

Mathematica

Most[FixedPointList[Times@@IntegerDigits[#]&, 3778888999]] (* Harvey P. Dale, Jun 08 2017 *)

Crossrefs

Cf. A003001.

Sequence in context: A104330 A233607 A172713 * A352531 A233599 A159463

Adjacent sequences: A121107 A121108 A121109 * A121111 A121112 A121113

Keyword

nonn,fini,full,base

Author

N. J. A. Sloane, Aug 12 2006

Extensions

Edited by Charles R Greathouse IV, Aug 05 2010

Status

approved