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A288880
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Primes of the form k!3 + 3^4, where k!3 is the triple factorial number (A007661).
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1
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83, 109, 12401, 58321, 24344401, 96342481, 2504902481, 26582634158080081, 1143053268797440081, 262134882788466688081, 427380210218181008588800081, 142299187144047333874073600081, 7825229077844441903818866688000081
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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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MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 3] + 3^4, {i, 0, 100}], PrimeQ[#]&]
Select[Table[Times@@Range[n, 1, -3]+81, {n, 100}], PrimeQ] (* Harvey P. Dale, Aug 13 2021 *)
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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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