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Search: id:A068836
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| A068836 |
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Smallest prime containing all the digits of the concatenation of first n natural numbers. |
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1
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| 11, 211, 1123, 2143, 112543, 1124653, 1234657, 112345687, 1123465789, 10123457689, 10123457689, 10123457689, 10123457689, 10123457689, 10123457689, 10123457689, 10123457689, 10123457689, 10123457689
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OFFSET
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1,1
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COMMENT
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a(n)=10123457689 for n>=10.
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EXAMPLE
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a(3) = 1123 which is the smallest prime that contains digits 1,2 and 3. a(4) = 2143.
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CROSSREFS
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Sequence in context: A160693 A167442 A124991 this_sequence A069628 A069613 A075858
Adjacent sequences: A068833 A068834 A068835 this_sequence A068837 A068838 A068839
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 09 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 27 2002
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