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Search: a264867 -id:a264867
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Primes of the form k!3 + 3^8, where k!3 is the triple factorial number (A007661).
+10
1
6563, 6571, 6841, 2504908961, 17961239302561, 81359229958561, 664565853958561, 2295148179742698933452806561, 628962407176689215723405312006561, 43414370923880963682387072385024006561, 116346745870073113470947277571643877742200278220800006561
OFFSET
1,1
LINKS
MATHEMATICA
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 3] + 3^8, {i, 0, 100}], PrimeQ[#]&]
CROSSREFS
Cf. A264867.
KEYWORD
nonn
AUTHOR
Robert Price, Jun 18 2017
STATUS
approved

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