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A139445
Numbers n such that primorial(n)/2 + 32 is prime.
5
3, 4, 5, 10, 11, 13, 41, 55, 66, 94, 104, 325, 363, 424, 672, 734, 818, 1044, 1389, 1595, 1728, 2870, 3149, 3922, 5352, 9431, 11586, 13991, 17507
OFFSET
1,1
COMMENTS
a(30)>25000. - Robert Price, Dec 28 2016
MATHEMATICA
k = 1/2; a = {}; Do[k = k*Prime[n]; If[PrimeQ[k + 32], Print[n]; AppendTo[a, n]], {n, 325}]; a
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Artur Jasinski, Apr 21 2008
EXTENSIONS
a(13)-a(22) from Ray Chandler, Jun 16 2013
a(23)-a(29) from Robert Price, Dec 28 2016
STATUS
approved