Cubes that become prime numbers when prefixed with a 5.

Terms

a(0) =12167a(1) =19683a(2) =24389a(3) =35937a(4) =59319a(5) =68921a(6) =456533a(7) =531441a(8) =658503a(9) =704969a(10) =970299a(11) =1685159a(12) =5545233a(13) =8869743a(14) =13312053a(15) =16974593a(16) =18191447a(17) =20346417a(18) =21717639a(19) =26730899a(20) =27818127a(21) =30080231a(22) =33076161a(23) =41781923a(24) =45499293a(25) =56181887