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A071062
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Minimal set of prime-strings in base 10.
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20
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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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listen;
history;
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OFFSET
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1,1
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COMMENTS
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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.
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LINKS
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Table of n, a(n) for n=1..26.
Ioulia N. Baoulina, Martin Kreh, Jörn Steuding, Deleting digits, arXiv:1607.01548 [math.NT], 2016.
David Butler, 65536, Making Your Own Sense blog, June 2017.
C. K. Caldwell, The Prime Glossary, minimal prime
J.-P. Delahaye, Nombres premiers inévitables et pyramidaux, Pour la science, (French edition of Scientific American), Juin 2002, p. 99.
J. Shallit, Minimal primes, pdf, J. Recreational Mathematics, vol. 30.2, pp. 113-117, 1999-2000.
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CROSSREFS
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Cf. A071070, A071071, A071072, A071073.
Sequence in context: A092728 A089769 A033274 * A320725 A320771 A002231
Adjacent sequences: A071059 A071060 A071061 * A071063 A071064 A071065
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KEYWORD
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fini,full,nice,nonn,base
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AUTHOR
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Benoit Cloitre, May 26 2002
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EXTENSIONS
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Typo corrected by T. D. Noe, Nov 15 2006
Typo corrected by Walter Kehowski, Feb 22 2007
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STATUS
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approved
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