After two decades in operation, HARPS stands out as one of the most precise, stable, and consequently prolific planet-searcher spectrographs. Despite its non-optimization for low-mass stars due to their limited brightness in the optical range, we monitored over 200 M dwarfs with HARPS since 2003. This presentation outlines a systematic and homogeneous analysis of the 200 radial velocity time series, from the extraction of velocity values using a template-matching method optimized for M dwarfs to the development of tools to establish a new planetary occurrence statistic.

Our results robustly confirm the prevalence of low-mass planets at short periods around these stars. Furthermore, we propose new rates for massive planets at large separations, made accessible by the exceptional longevity of HARPS. Additionally, working on sub-samples based on stellar mass, we investigate the dependence of the planetary population on the central mass and highlighted notable discrepancies.