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A073428
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First n-digit prime in "the sequence of odd integers": 135791113151719212325272931333537394143454749...
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1
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3, 13, 911, 5791, 79111, 105107, 1232527, 23252729, 113151719, 2527293133, 57911131517, 991011031051, 6769717375777, 13579111315171, 135791113151719, 4547495153555759, 31517192123252729, 719212325272931333, 1131517192123252729, 71921232527293133353
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OFFSET
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1,1
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COMMENTS
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Leading zeros are forbidden (cf. A073176).
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LINKS
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MATHEMATICA
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ndpQ[n_] := First[n] != 0 && PrimeQ[FromDigits[n]]; With[{od=Flatten[ IntegerDigits/@ Range[1, 501, 2]]}, Table[ FromDigits/@ Select[Partition[ od, n, 1], ndpQ, 1], {n, 20}]]//Flatten (* Harvey P. Dale, Feb 12 2013 *)
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CROSSREFS
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KEYWORD
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easy,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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