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%I #7 Dec 16 2018 17:00:45
%S 13,144,10946,1346269,12586269025,1548008755920,14472334024676221,
%T 1100087778366101931,10284720757613717413913,
%U 11825896447871834976429068427,1454489111232772683678306641953
%N Smallest Fibonacci number with a prime number of decimal digits.
%e 13 is the first Fibonacci with 2 decimal digits. 144 is the first Fibonacci with 3 decimal digits, etc.
%t Module[{nn=500,fibs},fibs=Fibonacci[Range[nn]];Table[SelectFirst[fibs, IntegerLength[ #]==n&],{n,Prime[Range[11]]}]] (* _Harvey P. Dale_, Dec 16 2018 *)
%K base,easy,nonn
%O 1,1
%A _Jason Earls_, Oct 07 2001
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