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A151892
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Numbers m such that m! + (next prime after m!) is prime.
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4
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1, 2, 3, 4, 6, 7, 14, 15, 20, 25, 32, 34, 35, 67, 89, 191, 316, 411, 1213, 1280, 2022, 2267
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OFFSET
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1,2
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COMMENTS
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LINKS
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MATHEMATICA
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a = {}; Do[If[PrimeQ[n! + NextPrime[n! ]], AppendTo[a, n]], {n, 1, 200]; a (* Artur Jasinski *)
Select[Range[420], PrimeQ[#!+NextPrime[#!]]&] (* Harvey P. Dale, Aug 20 2021 *)
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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