On Cilleruelo’s conjecture for the least common multiple of polynomial sequences

Abstract

A conjecture due to Cilleruelo states that for an irreducible polynomial $f$ with integer coefficients of degree $d\ge 2$, the least common multiple $L_f(N)$ of the sequence $f(1),f(2),\dots ,f(N)$ has asymptotic growth $\log L_f(N)\sim (d-1)N\log N$ as $N\to \infty$. We establish a version of this conjecture for almost all shifts of a fixed polynomial, the range of $N$ depending on the range of shifts.