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A075237 Primes whose base 7 reversal is also prime. 7

%I #5 May 23 2021 02:50:30

%S 2,3,5,11,13,17,19,23,29,37,41,43,47,53,67,71,79,89,97,101,107,127,

%T 137,139,149,151,157,167,173,179,193,197,199,211,227,229,233,241,257,

%U 269,271,277,281,307,311,331,337,347,373,389,397,401,419,421,433,439,443

%N Primes whose base 7 reversal is also prime.

%H Amiram Eldar, <a href="/A075237/b075237.txt">Table of n, a(n) for n = 1..10000</a>

%t Prime[ Select[ Range[100], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 7]], 7]] &]]

%Y Cf. A007500, A074832, A074833, A074834, A075235, A075236, A075238, A075239.

%K base,easy,nonn

%O 1,1

%A _Robert G. Wilson v_, Sep 09 2002

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Last modified April 24 06:52 EDT 2024. Contains 371920 sequences. (Running on oeis4.)