A115712 Semiprimes (A001358) whose digit reversal is a cube.

10, 46, 215, 3194, 9586, 27845, 35605, 40393, 52651, 63379, 70597, 76121, 84601, 98342, 119753, 189622, 211591, 234413, 291149, 376219, 485038, 616571, 778841, 886877, 946711, 2134493, 2198998, 2579365, 3405221, 3735467, 4430089

Offset

1,1

Links

Table of n, a(n) for n=1..31.

Example

46=2*23 is semiprime and 64=4^3.

Mathematica

Select[Range[5*10^6], PrimeOmega[#]==2&&IntegerQ[Surd[ IntegerReverse[ #], 3]]&] (* The program uses the IntegerReverse function from Mathematica version 10 *) (* Harvey P. Dale, Jan 18 2016 *)

Crossrefs

Cf. A001358, A115740.

Sequence in context: A096045 A287090 A183133 * A199313 A003765 A138041

Adjacent sequences: A115709 A115710 A115711 * A115713 A115714 A115715

Keyword

nonn,base

Author

Giovanni Resta, Jan 31 2006

Status

approved