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A074833 Primes whose ternary reversal is also prime. 7

%I #9 May 23 2021 02:49:59

%S 2,5,7,11,13,19,23,31,37,41,47,53,61,67,79,83,101,103,113,127,131,151,

%T 163,167,173,179,181,191,193,211,227,233,263,281,293,311,331,349,353,

%U 359,401,409,419,421,431,439,449,463,467,491,499,503,521,523,541,563

%N Primes whose ternary reversal is also prime.

%H Amiram Eldar, <a href="/A074833/b074833.txt">Table of n, a(n) for n = 1..10000</a>

%t Prime[ Select[ Range[110], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 3]], 3]] &]]

%Y Cf. A007500, A074832, A074834, A075235, A075236, A075237, A075238, A075239.

%K base,easy,nonn

%O 1,1

%A _Robert G. Wilson v_, Sep 09 2002

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)