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A090725 Primes whose representation in base 16 has no alphabetic characters. 2

%I #13 Mar 05 2016 04:28:31

%S 2,3,5,7,17,19,23,37,41,53,67,71,73,83,89,97,101,103,113,131,137,149,

%T 151,257,263,277,281,293,307,311,313,337,353,359,373,389,401,409,521,

%U 547,563,569,577,593,599,601,613,617,631,641,643,647,659,661,769,773

%N Primes whose representation in base 16 has no alphabetic characters.

%C Subsequence of primes of A102489. - _Michel Marcus_, Mar 05 2016

%H Zak Seidov, <a href="/A090725/b090725.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Prime[Range[400]], Max[IntegerDigits[#, 16]] < 10 & ] (* _Zak Seidov_, Mar 04 2016 *)

%o (PARI) isok(n) = isprime(n) && (vecmax(digits(n, 16)) < 10); \\ _Michel Marcus_, Mar 05 2016

%Y Cf. A102489.

%K base,nonn

%O 1,1

%A _Cino Hilliard_, Jan 18 2004

%E Better definition from _Omar E. Pol_, Dec 24 2008

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Last modified April 20 00:58 EDT 2024. Contains 371798 sequences. (Running on oeis4.)