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A059208
Numbers n such that n^7 reversed is a prime.
4
2, 20, 29, 41, 71, 76, 79, 133, 151, 152, 193, 200, 257, 268, 290, 359, 377, 379, 382, 389, 410, 493, 518, 544, 607, 710, 739, 760, 773, 784, 790, 794, 964, 1006, 1019, 1024, 1049, 1178, 1217, 1330, 1336, 1339, 1409, 1427, 1442, 1448, 1456, 1481, 1492
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[2000], PrimeQ[ToExpression[StringReverse[ToString[#^7]]]] &]
Select[Range[1500], PrimeQ[IntegerReverse[#^7]]&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, May 29 2017 *)
CROSSREFS
Sequence in context: A108342 A136903 A078460 * A268742 A261460 A061471
KEYWORD
nonn,base
AUTHOR
Robert G. Wilson v, Jan 16 2001
STATUS
approved