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A070855
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Smallest prime of the form k*n^n + 1.
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3
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2, 5, 109, 257, 37501, 139969, 3294173, 167772161, 3874204891, 30000000001, 24536803672547, 17832200896513, 12115004263690121, 344472211592298497, 12261028930664062501, 221360928884514619393, 6617922095090694113417
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OFFSET
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1,1
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COMMENTS
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By Linnik's theorem, a(n) = O(n^(Ln)) for some effectively computable L.
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LINKS
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MATHEMATICA
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sp[n_]:=Module[{n2=n^n, k=1}, While[!PrimeQ[k*n2+1], k++]; k*n2+1]; Array[ sp, 20] (* Harvey P. Dale, Jul 06 2014 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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