Factoring Generalized Repunits
John H. Jaroma · Irish Mathematical Society Bulletin · 2007
Twenty-five years ago, W. M. Snyder extended the notion of a repunit Rn to one in which for some positive integer b, Rn(b) has a b-adic expansion consisting of only ones.He then applied algebraic number theory in order to determine the pairs of integers under which Rn(b) has a prime divisor congruent to 1 modulo n.In this paper, we show how Snyder's theorem follows from existing theory pertaining to the Lucas sequences.