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A060385
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Largest prime factor of n-th Fibonacci number.
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5
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2, 3, 5, 2, 13, 7, 17, 11, 89, 3, 233, 29, 61, 47, 1597, 19, 113, 41, 421, 199, 28657, 23, 3001, 521, 109, 281, 514229, 61, 2417, 2207, 19801, 3571, 141961, 107, 2221, 9349, 135721, 2161, 59369, 421, 433494437, 307, 109441, 28657, 2971215073, 1103
(list; graph; refs; listen; history; internal format)
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OFFSET
| 3,1
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LINKS
| Charles R Greathouse IV, Table of n, a(n) for n = 3..1000
Brother U. Alfred, On the form of primitive factors of 43 Fibonacci numbers, Fibonacci Quarterly 1:1 (1963), pp.
D. E. Daykin and L. A. G. Dresel, Factorization of Fibonacci numbers, Fibonacci Quarterly 8:1 (1970), pp. 23-30.
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EXAMPLE
| F(82) = 2789 * 59369 * 370248451, so a(82) = 370248451.
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MATHEMATICA
| Table[First[Last[FactorInteger[Fibonacci[n]]]], {n, 3, 100}] (* From Vladimir Joseph Stephan Orlovsky, Feb 03 2012 *)
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CROSSREFS
| Cf. A000045, A022307, A001605, A060319, A060320, A051694, A193615.
Sequence in context: A139044 A060383 A060442 * A080648 A113195 A069110
Adjacent sequences: A060382 A060383 A060384 * A060386 A060387 A060388
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KEYWORD
| nonn,changed
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Apr 03 2001
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