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A032630
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Primes that are concatenations of n with n + 7.
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1
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29, 613, 2027, 2633, 3037, 3643, 4451, 6067, 6269, 6673, 7481, 8087, 8693, 10041011, 10341041, 10461053, 10861093, 10941101, 11041111, 11361143, 11421149, 11941201, 12001207, 12061213, 12141221, 12241231, 12501257
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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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Select[Table[FromDigits[Join[IntegerDigits[n], IntegerDigits[n+7]]], {n, 1500}], PrimeQ] (* Harvey P. Dale, Sep 20 2016 *)
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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