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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

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 = 0..470(* 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

Sequence in context: A007824 A235056 A115686 * A272697 A232510 A282832

Adjacent sequences:  A088109 A088110 A088111 * A088113 A088114 A088115

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Sep 25 2003

EXTENSIONS

Corrected and extended by Ray Chandler, Oct 14 2003

STATUS

approved

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Last modified July 24 03:01 EDT 2019. Contains 325290 sequences. (Running on oeis4.)