A121106 Trajectory of 6788 under "x -> product of digits of x" map.

6788, 2688, 768, 336, 54, 20, 0

Offset

1,1

Comments

This is the smallest number of persistence 6 (cf. A003001).

Links

Table of n, a(n) for n=1..7.

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

Mathematica

NestList[Times@@IntegerDigits[#]&, 6788, 6] (* Harvey P. Dale, Nov 19 2021 *)

Crossrefs

Cf. A003001.

Sequence in context: A031832 A200436 A250332 * A046515 A199996 A266847

Adjacent sequences: A121103 A121104 A121105 * A121107 A121108 A121109

Keyword

nonn,fini,full,base

Author

N. J. A. Sloane, Aug 12 2006

Extensions

Edited by Charles R Greathouse IV, Aug 06 2010

Status

approved