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A083471 Smallest prime which is a reverse concatenation of n consecutive primes. 1

%I #11 May 30 2021 11:46:21

%S 2,53,292319,59534743,3731292319,171311753,193191181179173167163,

%T 5953474341373129,167163157151149139137131127,

%U 149139137131127113109107103101,103101978983797371676159

%N Smallest prime which is a reverse concatenation of n consecutive primes.

%e a(3) = 292319 which is the concatenation of 29,23 and 19.

%t Table[SelectFirst[FromDigits[Flatten[IntegerDigits/@Reverse[#]]]&/@ Partition[ Prime[Range[1000]],n,1],PrimeQ],{n,20}] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, May 30 2021 *)

%Y Cf. A083472.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 02 2003

%E More terms from _David Wasserman_, Nov 15 2004

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Last modified March 28 12:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)