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A032716 Numbers n such that n prefixed by '8' and followed by '3' is prime. 0
2, 5, 6, 8, 12, 23, 24, 26, 27, 29, 35, 36, 42, 44, 51, 54, 56, 57, 62, 66, 69, 71, 75, 78, 80, 86, 89, 92, 93, 96, 101, 102, 104, 108, 116, 117, 120, 122, 123, 128, 129, 134, 135, 137, 146, 153, 155, 156, 170, 177, 185, 188, 194, 195, 197, 200, 201, 207, 215 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..59.

MATHEMATICA

Select[Range[300], PrimeQ[FromDigits[Join[{8}, IntegerDigits[#], {3}]]]&] (* Harvey P. Dale, Aug 20 2015 *)

CROSSREFS

Sequence in context: A280381 A105107 A002253 * A132229 A028750 A028787

Adjacent sequences:  A032713 A032714 A032715 * A032717 A032718 A032719

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, May 15 1998

STATUS

approved

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Last modified May 31 09:15 EDT 2020. Contains 334748 sequences. (Running on oeis4.)