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Search: id:A109862
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| A109862 |
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Palindromic primes p such that p's 10's complement is also a prime. |
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+0
2
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| 3, 5, 7, 11, 191, 353, 383, 929, 10601, 11411, 12821, 13931, 14741, 15551, 16061, 16361, 16661, 17471, 30803, 32423, 33533, 36263, 72227, 74747, 75557, 76367, 76667, 93239, 94349, 94649, 94949, 97379, 1028201, 1074701, 1082801, 1300031
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Conjecture : Sequence is infinite.
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EXAMPLE
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353 is a member as 1000-353 = 647 is also prime.
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MATHEMATICA
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Do[p = Prime[n]; If[FromDigits[Reverse[IntegerDigits[p]]] == p && PrimeQ[10^Length[IntegerDigits[p]] - p], Print[p]], {n, 1, 10^6}] (Propper)
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CROSSREFS
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Cf. A109863.
Sequence in context: A088051 A068113 A068831 this_sequence A069804 A121976 A070334
Adjacent sequences: A109859 A109860 A109861 this_sequence A109863 A109864 A109865
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 08 2005
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EXTENSIONS
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More terms from Ryan Propper (rpropper(AT)stanford.edu), Sep 01 2005
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