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A090716 Primes which are also prime if their base 32 representation is interpreted as a base 10 number. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
41 is prime; in base 32 it is written "19" and the base 10 number 19 is also prime.
MATHEMATICA
b32Q[n_]:= Module[{idn32=IntegerDigits[n, 32]}, Max[idn32]<10&&PrimeQ[FromDigits[idn32]]]; Select[Prime[Range[PrimePi[10000]]], b32Q] (* Vincenzo Librandi, Apr 18 2013 *)
CROSSREFS
Sequence in context: A090714 A048400 A286319 * A083820 A244556 A279954
KEYWORD
base,nonn
AUTHOR
Cino Hilliard, Jan 18 2004
EXTENSIONS
Edited by Jens Kruse Andersen, May 04 2008
STATUS
approved

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Last modified July 22 16:06 EDT 2024. Contains 374540 sequences. (Running on oeis4.)