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REFERENCES
| Alex Bellos, Here's Looking at Euclid: A Surprising Excursion Through the Astonishing World of Math, Free Press, 2010, page 176.
M. R. Diamond, Multiplicative persistence base 10: some new null results, http://www.markdiamond.com.au/download/joous-3-1-1.pdf.
M. Gardner, Fractal Music, Hypercards and More, Freeman, NY, 1991, pp. 170, 186.
C. A. Pickover, Wonders of Numbers, "Persistence", Chapter 28, Oxford University Press NY 2001.
Clifford A. Pickover, A Passion for Mathematics, Wiley, 2005; see p. 66.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| W. Schneider, The Persistence of a Number
N. J. A. Sloane, The persistence of a number, J. Recreational Math., 6 (1973), 97-98.
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
Wikipedia, Persistence of a number
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CROSSREFS
| Cf. A031346 (persistence), A133500 (powertrain), A133048 (powerback).
Cf. A006050, A007954, A031286, A031347, A033908, A046511, etc.
Cf. A121105-A121111.
Sequence in context: A002600 A087473 A014120 * A198377 A038350 A003344
Adjacent sequences: A002998 A002999 A003000 * A003002 A003003 A003004
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