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A230200 Product of digits of n-th palindromic prime. 4
2, 3, 5, 7, 1, 0, 3, 5, 8, 9, 9, 45, 63, 72, 98, 245, 392, 441, 81, 162, 0, 0, 0, 3, 4, 16, 28, 32, 27, 72, 81, 48, 112, 100, 125, 0, 108, 180, 216, 196, 441, 64, 256, 243, 648, 729, 0, 0, 0, 0, 0, 0, 45, 108, 144, 405, 720, 1152, 0, 225, 675, 1575, 648 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Shyam Sunder Gupta, Table of n, a(n) for n = 1..5953

EXAMPLE

a(6) = 0, since product of digits of 6th palindromic prime, that is, 101 is 0.

MATHEMATICA

a = {}; Do[z = n*10^(IntegerLength[n] - 1) + FromDigits@Rest@Reverse@IntegerDigits[n]; If[PrimeQ[z], s = Apply[Times, IntegerDigits[z]]; AppendTo[a, s]], {n, 1, 10^5}]; Insert[a, 1, 5]

Times@@IntegerDigits[#]&/@Select[Prime[Range[5000]], PalindromeQ] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jun 17 2017 *)

CROSSREFS

Cf. A002385, A007954, A053666.

Sequence in context: A020919 A126053 A109905 * A113493 A060420 A077648

Adjacent sequences:  A230197 A230198 A230199 * A230201 A230202 A230203

KEYWORD

nonn,base,less

AUTHOR

Shyam Sunder Gupta, Oct 11 2013

STATUS

approved

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Last modified September 20 22:20 EDT 2019. Contains 327252 sequences. (Running on oeis4.)