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A104328 Primes which are the reverse concatenation of three consecutive prime numbers. 1

%I #6 Oct 15 2015 12:35:48

%S 292319,127113109,193191181,283281277,331317313,359353349,373367359,

%T 397389383,409401397,439433431,461457449,463461457,479467463,

%U 509503499,641631619,691683677,751743739,787773769,809797787,839829827,883881877

%N Primes which are the reverse concatenation of three consecutive prime numbers.

%H Harvey P. Dale, <a href="/A104328/b104328.txt">Table of n, a(n) for n = 1..1000</a>

%e The first term is 292319 which is a prime and is the reverse concatenation of 19,23 and 29 which are three consecutive prime numbers.

%t Select[FromDigits[Flatten[IntegerDigits/@Reverse[#]]]&/@Partition[ Prime[ Range[200]],3,1],PrimeQ] (* _Harvey P. Dale_, Oct 15 2015 *)

%K base,nonn

%O 1,1

%A _Shyam Sunder Gupta_, Apr 17 2005

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Last modified April 25 12:33 EDT 2024. Contains 371969 sequences. (Running on oeis4.)