Аннотация:Let
S_k(m):=1^k+2^k+...+(m-1)^k
denote a power sum. In 2011 Bernd Kellner formulated the conjecture that for m ≥ 4 the ratio S_k(m+1)/S_k(m) of two consecutive power sums is never an integer. We will develop some techniques that allow one to exclude many integers ρ as a ratio and combine them to exclude the integers 3 ≤ ρ ≤ 1501 and, assuming a conjecture on irregular primes to be true, a set of density 1 of ratios ρ. To exclude a ratio ρ one has to show that the Erdős-Moser type equation (ρ-1)S_k(m)=m^k has no non-trivial solutions.