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A104322 Primes which are the reverse concatenation of five consecutive cubes. 0

%I #8 Aug 24 2014 09:09:26

%S 1968317576156251382412167,43307474251528417328140960004019679,

%T 50002114913000482680947416324657463,

%U 4549929345118016447388754436186443986977,192100033191102976190109375189119224188132517,217081801216000000214921799213847192212776173

%N Primes which are the reverse concatenation of five consecutive cubes.

%e The first term is 1968317576156251382412167 which is a prime and is the reverse concatenation of 12167,13824,15625,17576 and 19683 which are five consecutive cubes.

%t rcat[n_]:=FromDigits[Flatten[IntegerDigits/@Reverse[n]]]; Select[ rcat/@ Partition[Range[1000]^3,5,1],PrimeQ] (* _Harvey P. Dale_, Aug 24 2014 *)

%K base,nonn

%O 1,1

%A _Shyam Sunder Gupta_, Apr 17 2005

%E More terms from _Harvey P. Dale_, Aug 24 2014

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Last modified May 20 19:00 EDT 2024. Contains 372720 sequences. (Running on oeis4.)