MÖBIUS INVERSION AND THE DISTRIBUTION OF PRIMES OF INTEGERS MARIUS OVERHOLT A heuristic for the size of the Möbius inverse is obtained by means of matrix algebra, using the spectral theorem and the concentration of measure phenomenon on high-dimensional spheres. When this heuristic is applied to the summatory function M (x) of the Möbius function µ, it yields a plausibility argument in favor of the Riemann Hypothesis. Some computational evidence bearing on this will be presented. It seems fairly probable that Thomas Jan Stieltjes discovered this approach to Möbius inversion more than a hundred years ago, while working on his claimed proof of RH (which he never published.) University of Tromsø, Norway E-mail address: marius@math.uit.no 1