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A166581 Primes containing the string 333. 10

%I #18 Nov 01 2022 15:25:54

%S 2333,3331,5333,7333,10333,13331,13337,13339,16333,17333,19333,20333,

%T 23333,23339,29333,31333,33301,33311,33317,33329,33331,33343,33347,

%U 33349,33353,33359,33377,33391,38333,41333,43331,49333,50333,55333

%N Primes containing the string 333.

%H Vincenzo Librandi, <a href="/A166581/b166581.txt">Table of n, a(n) for n = 1..1000</a>

%F a(n) ~ n log n. - _Charles R Greathouse IV_, Nov 01 2022

%t p333Q[n_] := Module[{idn = IntegerDigits[n]}, MemberQ[Partition[idn, 3, 1], {3, 3, 3}]]; Select[Prime[Range[20000]], p333Q] (* _Vincenzo Librandi_ Sep 14 2012 *)

%Y Cf. A166571-A166573, A166579, A166580, A166582.

%K nonn,base

%O 1,1

%A _Vincenzo Librandi_, Nov 01 2009

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Last modified March 28 08:12 EDT 2024. Contains 371236 sequences. (Running on oeis4.)