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A088073
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Beginning with 11 (concatenation of 1 twice), smallest number which is a concatenation of itself as many (say k) times required, chosen from odd numbers not == 5 (mod 10), in natural order, so that every partial concatenation is prime.
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1
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OFFSET
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0,1
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COMMENTS
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Numbers chosen are from 1,3,7,9,11,13,17,19,21,23,27,29,... which can produce primes.
Next term has > 2000 digits and is too large to include. - David Wasserman, Jul 01 2005
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LINKS
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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