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A121105 Trajectory of 679 under "x -> product of digits of x" map. 1
679, 378, 168, 48, 32, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This is the smallest number of persistence 5 (cf. A003001).

LINKS

Table of n, a(n) for n=1..6.

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

CROSSREFS

Cf. A003001.

Sequence in context: A250872 A186127 A097771 * A046514 A199995 A164650

Adjacent sequences:  A121102 A121103 A121104 * A121106 A121107 A121108

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

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Last modified October 19 00:36 EDT 2018. Contains 316327 sequences. (Running on oeis4.)