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A159471
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Palindromic primes using only odd digits (1, 3, 5, 7 or 9).
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1
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3, 5, 7, 11, 131, 151, 191, 313, 353, 373, 757, 797, 919, 11311, 13331, 13931, 15551, 17971, 19391, 19991, 31513, 33533, 35153, 35353, 35753, 37573, 71317, 71917, 75557, 77377, 77977, 79397, 79997, 93139, 93739, 95959, 97379, 97579, 1117111
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Table[Select[FromDigits/@Tuples[{1, 3, 5, 7, 9}, n], PrimeQ[#]&& # == IntegerReverse[ #]&], {n, 7}]//Flatten (* Harvey P. Dale, Sep 17 2016 *)
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CROSSREFS
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KEYWORD
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nonn,base,less
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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