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A134596
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The largest n-digit primeval number A072857.
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3
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2, 37, 137, 1379, 13679, 123479, 1234679, 12345679, 102345679, 1123456789, 10123456789
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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Former definition: The least n-digit number m (i.e., m >= 10^(n-1)) which yields A076730(n) = the maximum, for m < 10^n, of A039993(m) = number of primes that can be formed using some or all digits of m.
A subsequence of A072857, consisting in the largest n-digit term of the latter, for n=1,2,3,.... - M. F. Hasler, Mar 12 2014
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LINKS
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Table of n, a(n) for n=1..11.
M. Keith, Integers containing many embedded primes
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FORMULA
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a(n) = max { m in A072857, m < 10^n }. - M. F. Hasler, Mar 12 2014
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CROSSREFS
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Cf. A039993, A134597.
Sequence in context: A262182 A142077 A107182 * A139119 A244757 A053788
Adjacent sequences: A134593 A134594 A134595 * A134597 A134598 A134599
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KEYWORD
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nonn,base,more
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AUTHOR
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N. J. A. Sloane, Jan 25 2008
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EXTENSIONS
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Link fixed by Charles R Greathouse IV, Aug 13 2009
Definition reworded and values of a(6)-a(11) added by M. F. Hasler, Mar 11 2014
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STATUS
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approved
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