A038840 Cubes that are concatenations of primes.

27, 343, 729, 1331, 2197, 3375, 4913, 5832, 19683, 21952, 24389, 29791, 35937, 54872, 59319, 91125, 103823, 110592, 117649, 148877, 166375, 195112, 205379, 226981, 250047, 314432, 357911, 389017, 421875, 571787, 614125, 681472, 753571, 857375, 941192, 1092727

Offset

1,1

Links

Table of n, a(n) for n=1..36.

Sean A. Irvine, Java program (github)

Example

Examples from Sean A. Irvine, Feb 15 2021: (Start)
3^3 = 27 = (2)(7).
18^3 = 5832 = (5)(83)(2).
29^3 = 24389 = (2)(43)(89).
(End)

Prog

(PARI) for(n=2, 1e2, if(is_A152242(n^3), print1(n^3", "))) \\ Charles R Greathouse IV, Jun 10 2013

Crossrefs

Cf. A038692.

Sequence in context: A029947 A030673 A030683 * A226090 A032599 A016839

Adjacent sequences: A038837 A038838 A038839 * A038841 A038842 A038843

Keyword

nonn,base

Author

Jeff Burch

Extensions

Missing a(6), a(7), a(9), a(13), a(16)-a(18), a(21), a(23) from Charles R Greathouse IV, Jun 10 2013

Missing terms inserted and more terms from Sean A. Irvine, Feb 15 2021

Status

approved