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On factorials expressible as sums of at most three Fibonacci numbers

Published online by Cambridge University Press:  05 August 2010

Florian Luca
Affiliation:
Instituto de Matemáticas, Universidad Nacional Autónoma de México, CP 58089, Morelia, Michoacán, México (fluca@matmor.unam.mx)
Samir Siksek
Affiliation:
Mathematics Institute, University of Warwick, Coventry CV4 7AL, UK (s.siksek@warwick.ac.uk)
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Abstract

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In this paper, we determine all the factorials that are a sum of at most three Fibonacci numbers.

MSC classification

Type
Research Article
Copyright
Copyright © Edinburgh Mathematical Society 2010

References

1. Berend, D. and Harmse, J. E., On polynomial-factorial Diophantine equations, Trans. Am. Math. Soc. 358(4) (2006), 17411779.CrossRefGoogle Scholar
2. Bilu, Yu, Hanrot and P. M. Voutier, G., Existence of primitive divisors of Lucas and Lehmer numbers, J. Reine Angew. Math. 539 (2001), 75122.Google Scholar
3. Bollman, M., Sums of consecutive factorials in the Fibonacci sequence, Congr. Numer. 194 (2009), 7783.Google Scholar
4. Borevich, Z. I. and Shafarevich, I. R., Number theory (Academic Press, 1966).Google Scholar
5. Bosma, W., Cannon, J. and Playoust, C., The Magma algebra system I: the user language, J. Symb. Computat. 24 (1997), 235265 (see also www.maths.usyd.edu.au)Google Scholar
6. Brocard, H., Question 166, Nouv. Corresp. Math. 2 (1876), 287.Google Scholar
7. Bugeaud, Y., Lucas, F., Mignotte, M. and Siksek, S., Perfect powers from products of terms in Lucas sequences, J. Reine Angew. Math. 611 (2007), 109129.Google Scholar
8. Bugeaud, Y., Mignotte, M. and Siksek, S., Classical and modular approaches to exponential Diophantine equations, I, Fibonacci and Lucas perfect powers, Annals Math. 163 (2006), 9691018.CrossRefGoogle Scholar
9. Cassels, J. W. S., Local fields, London Mathematical Society Student Texts, Volume 3 (Cambridge University Press, 1986).Google Scholar
10. Cipu, M., Luca, F. and Mignotte, M., Solutions of the Diophantine equation aux + bvy + cwz = n!, Annals Sci. Math. Québec 31 (2007), 127137.Google Scholar
11. Erdʺos, P. and Obláth, R., Über diophantische Gleichungen der Form n! = xp ± yp und n! ± m! = xp, Acta Sci. Math. (Szeged) 8 (1937), 241255.Google Scholar
12. Grossman, G. and Luca, F., Sums of factorials in binary recurrence sequences, J. Number Theory 93(2) (2002), 87107.Google Scholar
13. Guy, R. K., Unsolved problems in number theory, 3rd edn (Springer, 2004).Google Scholar
14. Knott, R., Fibonacci numbers and the golden section, www.mcs.surrey.ac.uk/Personal/R.Knott/Fibonacci/.Google Scholar
15. Luca, F., The number of nonzero digits of n!, Can. Math. Bull. 45(1) (2002), 115118.CrossRefGoogle Scholar
16. Luca, F. and Stӑnicӑ, P., F1F2F3F4F5F6F8F10F12 = 11!, Portugaliae Math. 63 (2006), 251260.Google Scholar
17. Ramanujan, S., Question 469, J. Indian Math. Soc. 5 (1913), 59.Google Scholar
18. Rosser, J. B. and Schoenfeld, L., Sharper bounds for the Chebyshev functions θ(x) and Ψ(x), Math. Comp. 29 (1975), 243269.Google Scholar