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A162603
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Primes of the form n^n - n! + 1.
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3
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OFFSET
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1,1
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COMMENTS
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The next term is too large to include.
2^2-2!+1=4-2+1=3, 4^4-4!+1=256-24+1=233,..
The next term, a(5), has 527 digits and derives from n=224. - Harvey P. Dale, Jun 03 2014
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LINKS
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MATHEMATICA
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f[n_]:=n^n-n!+1; lst={}; Do[p=f[n]; If[PrimeQ[p], AppendTo[lst, p]], {n, 2*5!}]; lst
Select[Table[n^n-n!+1, {n, 30}], PrimeQ] (* Harvey P. Dale, Jun 03 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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STATUS
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approved
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