Abstract
For any positive integer n let Fn be the n-th Fibonacci number. Given positive integers a and b, we study the size of the greatest common divisor of Fn + a and Fm + b for varying positive integers m and n.
Similar content being viewed by others
References
Y. Bugeaud, P. Corvaja and U. Zannier, An upper bound for the G.C.D. of a n -1 and b n-1, Preprint, 2001.
P. Corvaja, U. Zannier, A lower bound for the height of a rational function at S-unit points, Preprint, 2003.
P. Corvaja and U. Zannier, Diophantine equations with power sums and universal Hilbert sets, Indag.Math.(N.S.) 9 no. 3 (1998), 317–332.
P. Corvaja and U. Zannier, Finiteness of integral values for the ratio of two linear recurrences, Invent.math. 149 no. 2 (2002), 431–451.
P. Corvaja and U. Zannier, On the greatest prime factor of (ab + 1)(ac + 1), Proc.Amer.Math.Soc. (to appear).
K. GyŐry, A. SÁrkŐzy and C. L. Stewart, On the number of prime factors of integers of the form ab + 1, Acta Arith. 74 no. 4, 1996.
S. H. HernÁndez and F. Luca, On the largest prime factor of (ab + 1)(ac + 1)(bc + 1), Preprint, 2002.
F. Luca, Divisibility properties of binary recurrent sequences, Indag.Math.(N.S.) 12 no. 3 (2001), 353–367.
F. Luca, Arithmetic properties of members of binary recurrent sequences, Acta Arith. 109 no. 1 (2003), 81–107.
F. Luca, On the greatest common divisor of two Cullen numbers, Abh.Math.Sem.Univ.Hamburg (to appear).
A. PethŐ, On the greatest prime factor and divisibility properties of linear recursive sequences, Indag.Math.(N.S.) 1, (1990), 85–93.
T. N. Shorey and R. Tijdeman, Exponential Diophantine equations, Cambridge Univ. Press, Cambridge, 1986.
A. J. van der Porten and P. G. Walsh, A note on Jacobi symbols and continued fractions, Amer.Math.Monthly 106 no. 1 (1999), 52–56.
K. R. Yu, p-adic logarithmic forms and group of varieties II, Acta Arith. 89 no. 4 (1999), 337–378.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hernández, S., Luca, F. Common factors of shifted Fibonacci numbers. Periodica Mathematica Hungarica 47, 95–110 (2003). https://doi.org/10.1023/B:MAHU.0000010814.22264.14
Issue Date:
DOI: https://doi.org/10.1023/B:MAHU.0000010814.22264.14