Type: Article
Publication Date: 2009-04-03
Citations: 18
DOI: https://doi.org/10.1017/s0004972709000033
Abstract Let P ( k ) be the largest prime factor of the positive integer k . In this paper, we prove that the series is convergent for each constant α <1/2, which gives a more precise form of a result of C. L. Stewart [‘On divisors of Fermat, Fibonacci, Lucas and Lehmer numbers’, Proc. London Math. Soc. 35 (3) (1977), 425–447].