

A071062


Minimal set of primestrings 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
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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. 113117, 19992000.


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. 113117, 19992000.


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



