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%I #9 Aug 10 2021 10:33:29
%S 27,729,12167,19683,68921,148877,185193,328509,658503,704969,970299,
%T 1030301,1367631,2248091,3581577,5000211,9663597,15813251,17779581,
%U 19034163
%N Cubes that become a prime number when prefixed with a 2.
%C Subsequence of cubes of A032665. - _Michel Marcus_, Jun 22 2016
%H G. C. Greubel, <a href="/A167726/b167726.txt">Table of n, a(n) for n = 1..10000</a>
%t Select[Range[1, 500000, 2]^3, PrimeQ[FromDigits[Join[{2}, IntegerDigits[#]]]] &] (* _G. C. Greubel_, Jun 21 2016 *)
%Y Cf. A032665.
%K base,nonn
%O 1,1
%A _Claudio Meller_, Nov 10 2009
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