A167726 Cubes that become a prime number when prefixed with a 2.

27, 729, 12167, 19683, 68921, 148877, 185193, 328509, 658503, 704969, 970299, 1030301, 1367631, 2248091, 3581577, 5000211, 9663597, 15813251, 17779581, 19034163

Offset: 1

Author

Claudio Meller, Nov 10 2009

Keywords

• base
• nonn

Comments

Subsequence of cubes of A032665. - Michel Marcus, Jun 22 2016

Links

• G. C. Greubel, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A032665.

Programs

Mathematica

Select[Range[1, 500000, 2]^3, PrimeQ[FromDigits[Join[{2}, IntegerDigits[#]]]] &] (* G. C. Greubel, Jun 21 2016 *)