A233783 - OEIS

%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