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A134596 The largest n-digit primeval number A072857. 5
2, 37, 137, 1379, 13679, 123479, 1234679, 12345679, 102345679, 1123456789, 10123456789 (list; graph; refs; listen; history; text; internal format)



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.

Subsequence of A072857 consisting of the largest terms of given length. - M. F. Hasler, Mar 12 2014


Table of n, a(n) for n=1..11.

M. Keith, Integers containing many embedded primes


a(n) = max { m in A072857, m < 10^n }. - M. F. Hasler, Mar 12 2014


(PARI) A134596(n, A=A072857)=vecmax(select(t->logint(t, 10)+1==n, A)) \\ where A072857 must comprise all n digit terms of that sequence. - M. F. Hasler, Oct 14 2019


Cf. A039993, A072857, A076730, A134597.

Sequence in context: A262182 A142077 A107182 * A139119 A244757 A298476

Adjacent sequences:  A134593 A134594 A134595 * A134597 A134598 A134599




N. J. A. Sloane, Jan 25 2008


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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Last modified December 16 04:05 EST 2019. Contains 330013 sequences. (Running on oeis4.)