login
This site is supported by donations to The OEIS Foundation.

 

Logo

Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A071062 Minimal set of prime-strings in base 10. 16
2, 3, 5, 7, 11, 19, 41, 61, 89, 409, 449, 499, 881, 991, 6469, 6949, 9001, 9049, 9649, 9949, 60649, 666649, 946669, 60000049, 66000049, 66600049 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Any prime number contains in its digits at least one of the term of this sequence and there is no smaller set. There are 26 terms in the sequence.

REFERENCES

J.-P. Delahaye, "Pour la science", (French edition of Scientific American), Juin 2002, p. 99.

J. Shallit, Minimal primes, J. Recreational Mathematics, vol. 30.2, pp. 113-117, 1999-2000.

LINKS

Table of n, a(n) for n=1..26.

C. K. Caldwell, The Prime Glossary, minimal prime

J. Shallit, Minimal primes, J. Recreational Mathematics, vol. 30.2, pp. 113-117, 1999-2000.

CROSSREFS

Cf. A071070, A071071, A071072, A071073.

Sequence in context: A092728 A089769 A033274 * A002231 A087769 A084736

Adjacent sequences:  A071059 A071060 A071061 * A071063 A071064 A071065

KEYWORD

fini,full,nice,nonn,base

AUTHOR

Benoit Cloitre, May 26 2002

EXTENSIONS

Typo corrected by T. D. Noe, Nov 15 2006

Typo corrected by Walter Kehowski, Feb 22 2007

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified September 3 01:21 EDT 2014. Contains 246369 sequences.