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A007488
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Primes whose reversal is a square.
(Formerly M5321)
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25
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61, 163, 487, 691, 1297, 1861, 4201, 4441, 4483, 5209, 5227, 9049, 9631, 12391, 14437, 16141, 16987, 61483, 63211, 65707, 65899, 67057, 69481, 92767, 94273, 96979, 106303, 108061, 123031, 123373, 125329, 127291, 129643, 142771, 146857, 148249, 165901
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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For prime reversals that are cubes, 4th powers, 5th powers see A057699, A058996, A059000. - R. J. Mathar, Nov 13 2007
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
C. W. Trigg, Primes with Reverses That Are Powers, J. Rec. Math., 17 (1985), 172-176.
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..1000
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MATHEMATICA
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Select[ Range[ 10^6 ], PrimeQ[ # ] && IntegerQ[ Sqrt[ ToExpression[ StringReverse[ ToString[ # ] ] ] ] ] & ]
Select[Prime[Range[16000]], IntegerQ[Sqrt[FromDigits[Reverse[ IntegerDigits[#]]]]]&] (* From Harvey P. Dale, Jul 19 2011 *)
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CROSSREFS
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Cf. A059007, A068989. See A132388 for another version.
Sequence in context: A161853 A106096 A142482 * A142538 A057216 A139993
Adjacent sequences: A007485 A007486 A007487 * A007489 A007490 A007491
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KEYWORD
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base,nonn,nice,easy
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AUTHOR
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N. J. A. Sloane, Robert G. Wilson v
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STATUS
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approved
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