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A088112
Perfect powers whose digit reversal is prime.
1
16, 32, 125, 128, 196, 361, 784, 1024, 1369, 1444, 1600, 1681, 3844, 7225, 7921, 9025, 9409, 11236, 14161, 18496, 19321, 19600, 36100, 37249, 38416, 70756, 73441, 75076, 76729, 78400, 78961, 97969, 99856, 102400, 105625, 107584, 109561, 111556
OFFSET
1,1
COMMENTS
Conjectures: (1) Sequence is infinite. (2) For every n there are infinitely many members of the form k^n.
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..471 (no further terms through 32 million)
MATHEMATICA
Select[Range[120000], GCD@@FactorInteger[#][[All, 2]]>1 && PrimeQ[ IntegerReverse[ #]]&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, May 03 2018 *)
CROSSREFS
Intersection of A001597 and A095179.
Sequence in context: A007824 A235056 A115686 * A272697 A232510 A339356
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Sep 25 2003
EXTENSIONS
Corrected and extended by Ray Chandler, Oct 14 2003
Offset changed by Andrew Howroyd, Sep 22 2024
STATUS
approved