|
%I #5 Dec 15 2017 17:36:51
%S 3,14,20,24,25,30,37,43,50,53,59,60,67,73,79,80,97,100,105,110,115,
%T 124,125,134,138,146,151,152,158,171,172,198,201,202,225,227,235,243,
%U 249,250,255,259,260,265,295,301,302,306,314,318,320,325,327,330,343,347
%N Numbers n such that the absolute value of (n - sum of the factorials of its digits) is prime.
%C 6*10^843-1 generates an 844-digit prime.
%H Harvey P. Dale, <a href="/A108933/b108933.txt">Table of n, a(n) for n = 1..1000</a>
%e a(5)=25 because |25-(2!+5!)| = 97, a prime.
%t Select[Range[400],PrimeQ[Abs[#-Total[IntegerDigits[#]!]]]&] (* _Harvey P. Dale_, Oct 03 2017 *)
%Y Cf. A108911.
%K base,easy,nonn
%O 1,1
%A _Jason Earls_, Jul 20 2005
|
