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%I #14 Aug 10 2015 17:54:44
%S 2,23,251,347,5023,50227,64037,3924211,4952767,43275737,586635689,
%T 592856489,62527264517
%N The smallest prime that produces a set of n primes such that every prime after the first one is equal to the previous minus the product of its nonzero digits.
%C a(14) > 6.8*10^11. - _Giovanni Resta_, Dec 16 2013
%e Example: for n = 3, initial prime is 251, because 251 -> 251 - 2*5*1 = 241 -> 241 - 2*4*1 -> 233.
%Y Cf. A063543, A233692.
%K nonn,base,hard
%O 1,1
%A _Carlos Rivera_, Dec 15 2013
%E a(11)-a(13) from _Giovanni Resta_, Dec 16 2013
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