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%I #18 Jun 06 2020 10:45:01
%S 9,10,13,19,26,68,73,115,190,195,232,549,742,1502,2239,2618,5143,8081,
%T 9442,31402,77919,93790,99434,120841
%N Numbers n such that 10^n - 123456789 is prime.
%C a(26) > 200000. - _Robert Price_, Jun 06 2020
%o (PARI) for(n=1,10^4,if(ispseudoprime(10^n - 123456789),print1(n,", ")))
%Y Cf. A248349, A248351, A248352, A050289.
%K nonn,hard,more
%O 1,1
%A _Derek Orr_, Oct 05 2014
%E a(21)-a(25) from _Robert Price_, Feb 26 2020