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A090716
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Primes which are also prime if their base 32 representation is interpreted as a base 10 number.
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1
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2, 3, 5, 7, 41, 67, 73, 97, 103, 131, 163, 193, 199, 227, 233, 1031, 1033, 1129, 1223, 1319, 1321, 2081, 2153, 2243, 2273, 2339, 3079, 3169, 3209, 3271, 3299, 3331, 4201, 4289, 5351, 5417, 6151, 6337, 7177, 7369, 8263, 8297, 8387, 8423, 9257, 9319, 9511
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OFFSET
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1,1
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..1000
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EXAMPLE
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41 is prime; in base 32 it is written "19" and the base 10 number 19 is also prime.
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MATHEMATICA
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b32Q[n_]:= Module[{idn32=IntegerDigits[n, 32]}, Max[idn32]<10&&PrimeQ[FromDigits[idn32]]]; Select[Prime[Range[PrimePi[10000]]], b32Q] (* Vincenzo Librandi, Apr 18 2013 *)
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CROSSREFS
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Sequence in context: A090714 A048400 A286319 * A083820 A244556 A279954
Adjacent sequences: A090713 A090714 A090715 * A090717 A090718 A090719
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KEYWORD
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base,nonn
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AUTHOR
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Cino Hilliard, Jan 18 2004
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EXTENSIONS
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Edited by Jens Kruse Andersen, May 04 2008
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STATUS
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approved
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