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Table of n, a(n) for n=1..21.
Eric Weisstein's World of Mathematics, Multiplicative Persistence
26899889 -> [ 4478976 ][ 338688 ][ 27648 ][ 2688 ][ 768 ][ 336 ][ 54 ][ 20 ][ 0 ] -> one digit in nine steps.
Cf. A046500 A046518.
Sequence in context: A121109 A046518 A199999 * A251806 A184670 A069342
Adjacent sequences: A046506 A046507 A046508 * A046510 A046511 A046512
Patrick De Geest, Sep 15 1998.