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A134597 a(n) gives the maximal value of A075053(m) for any n-digit number m. 3
1, 4, 15, 64, 325 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

In A075053(m), the primes obtained as permutations of digits of m are counted several times if they can be obtained in several different ways. See sequence A076730 which uses A039993 instead, i.e., counting only different primes. - M. F. Hasler, Mar 11 2014

LINKS

Table of n, a(n) for n=1..5.

M. Keith, Integers containing many embedded primes

FORMULA

a(n) <= A007526(n), with equality iff n <= 2. [Keith]

a(n) = max { A075053(m); 10^(n-1) <= m < 10^n } >= A076730(n) = max { A039993(m); 10^(n-1) <= m < 10^n }. - M. F. Hasler, Mar 11 2014

CROSSREFS

Cf. A039993, A134596.

Sequence in context: A027216 A124541 A323789 * A007526 A233536 A318121

Adjacent sequences:  A134594 A134595 A134596 * A134598 A134599 A134600

KEYWORD

nonn,base,more

AUTHOR

N. J. A. Sloane, Jan 25 2008

EXTENSIONS

Link fixed by Charles R Greathouse IV Aug 13 2009

Definition corrected by M. F. Hasler, Mar 11 2014

STATUS

approved

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Last modified February 19 10:34 EST 2019. Contains 320310 sequences. (Running on oeis4.)