A192610 Numbers n such that the concatenation of n^3 n^2 n^1 n^0 is prime.

9, 36, 37, 54, 55, 76, 79, 330, 333, 352, 370, 394, 405, 417, 427, 456, 490, 492, 498, 504, 517, 550, 583, 624, 634, 652, 667, 762, 795, 828, 855, 874, 876, 891, 898, 903, 921, 924, 925, 930, 949, 960, 967, 982

Offset

1,1

Links

Table of n, a(n) for n=1..44.

Example

Example 9 is in the list because the concatenation of 9^3 9^2 9^1 9^0 is 7298191 and this number is prime.

Mathematica

Select[Range[1000], PrimeQ[FromDigits[Flatten[IntegerDigits/@ (#^Range[ 3, 0, -1])]]]&] (* Harvey P. Dale, Jul 27 2011 *)

Crossrefs

Cf. A192608, A192609.

Sequence in context: A330907 A231666 A143224 * A319958 A329808 A169580

Adjacent sequences: A192607 A192608 A192609 * A192611 A192612 A192613

Keyword

nonn,base

Author

Claudio Meller, Jul 05 2011

Status

approved