A134649 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A134649

Minimal n-primeval numbers: a(n) = smallest number M such that all primes with <= n digits are embedded in a permuted subsequence of M's digits.

1

2357, 1123456789, 1012233445566778899, 10011222333444555666777888999, 1000111222233334444555666777788889999, 100001111222233333444445555566666777778888899999, 100000111112222233333344444555556666677777788888999999

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..7.

M. Keith, Integers containing many embedded primes

CROSSREFS

Cf. A039993, A135377.

Sequence in context: A101251 A132904 A030473 * A135377 A081208 A250990

Adjacent sequences: A134646 A134647 A134648 * A134650 A134651 A134652

KEYWORD

nonn,base,easy

AUTHOR

N. J. A. Sloane, Jan 25 2008

EXTENSIONS

Extended by Charles R Greathouse IV Aug 13 2009

STATUS

approved