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%I #20 Nov 01 2018 15:56:02
%S 1667,6673,6679,10667,15667,16673,25667,31667,34667,36671,36677,39667,
%T 42667,45667,46679,49667,52667,54667,55667,56671,57667,61667,63667,
%U 64667,66701,66713,66721,66733,66739,66749,66751,66763,66791,66797,70667,76667
%N Primes which contain the fax number of the beast (667).
%C Since the so-called beastly primes (containing the digit string 666) were mentioned recently in a Numberphile video (see link), I guess it is now OK to include these numbers (which are based on the old convention that your fax number was one more than your telephone number) in the OEIS.
%C Note that there is no analog of A232448, because 1 0^k 667 0^k 1 is always divisible by 3 and is never prime.
%H Tony Padilla and Brady Haran, <a href="https://youtu.be/zk_Q9y_LNzg">The Most Evil Number</a>, Numberphile Video, October 2018
%H Margaret Wertheim, <a href="http://www.cabinetmagazine.org">The Fax Numbers of the Beast, and Other Mathematical Sports: An Interview with Neil Sloane</a>, Cabinet Magazine, Issue 57, Spring 2015, pages 48-54.
%Y Cf. beastly primes A131645, also A232448.
%K nonn,base
%O 1,1
%A _N. J. A. Sloane_, Nov 01 2018