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A192610
Numbers n such that the concatenation of n^3 n^2 n^1 n^0 is prime.
2
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
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
Sequence in context: A330907 A231666 A143224 * A319958 A329808 A169580
KEYWORD
nonn,base
AUTHOR
Claudio Meller, Jul 05 2011
STATUS
approved