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A018847
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Strobogrammatic primes: the same upside down (calculator-style numerals).
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5
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2, 5, 11, 101, 151, 181, 619, 659, 6229, 10501, 12821, 15551, 16091, 18181, 19861, 60209, 60509, 61519, 61819, 62129, 116911, 119611, 160091, 169691, 191161, 196961, 605509, 620029, 625529, 626929, 650059, 655559, 656959, 682289, 686989, 688889
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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MATHEMATICA
| lst = {}; fQ[n_] := Block[{allset = {0, 1, 2, 5, 6, 8, 9}, id = IntegerDigits@n}, Union@ Join[id, allset] == allset && Reverse[id /. {6 -> 9, 9 -> 6}] == id]; Do[ If[ PrimeQ@n && fQ@n, AppendTo[lst, n], {n, 700000}] (* Robert G. Wilson v (rgwv(at)rgwv.com), Feb 27 2007 *)
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CROSSREFS
| Cf. A007597.
Sequence in context: A127010 A140547 A131480 * A178318 A134996 A134998
Adjacent sequences: A018844 A018845 A018846 * A018848 A018849 A018850
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KEYWORD
| nonn,base
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AUTHOR
| David W. Wilson (davidwwilson(AT)comcast.net)
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