

A064525


Smallest Fibonacci number with a prime number of decimal digits.


0



13, 144, 10946, 1346269, 12586269025, 1548008755920, 14472334024676221, 1100087778366101931, 10284720757613717413913, 11825896447871834976429068427, 1454489111232772683678306641953
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OFFSET

1,1


LINKS



EXAMPLE

13 is the first Fibonacci with 2 decimal digits. 144 is the first Fibonacci with 3 decimal digits, etc.


MATHEMATICA

Module[{nn=500, fibs}, fibs=Fibonacci[Range[nn]]; Table[SelectFirst[fibs, IntegerLength[ #]==n&], {n, Prime[Range[11]]}]] (* Harvey P. Dale, Dec 16 2018 *)


CROSSREFS



KEYWORD

base,easy,nonn


AUTHOR



STATUS

approved



