OFFSET
1,12
COMMENTS
10^33 is believed to be the largest power of 10 that can be expressed as the product of 2 numbers which contain no zero digits.
REFERENCES
C. Stanley Ogilvy and John T. Anderson, Excursions in Number Theory. Dover. New York: 1988. Page 89.
C. Pickover, Wonders of Numbers, Oxford University Press, NY, 2001, pp. 201-202, 353.
LINKS
C. A. Pickover, "Wonders of Numbers, Adventures in Mathematics, Mind and Meaning," Zentralblatt review
EXAMPLE
a(58)=1 because 10^58 = 288230376151711744 * 34694469519536141888238489627838134765625
and the latter two numbers contain only one zero between them.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Jason Earls, Jul 22 2003
STATUS
approved