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Let $m$, $r$ and $n$ be positive integers. We denote by ${\bf k}\vdash n$ anytuple of odd positive integers ${\bf k}=(k_1,\dots,k_t)$ such that$k_1+\dots+k_t=n$ and $k_j\ge 3$ for all $j$. In this paper we prove that forevery sufficiently large prime $p$ $$ \sum_{\substack{l_1+l_2+\cdots+l_n=mp^rp\nmid l_1 l_2 \cdots l_n }} \frac1{l_1l_2\cdots l_n} \equiv p^{r-1} \sum_{{\bfk}\vdash n} C_{m,{\bf k}} B_{p-{\bf k}} \pmod{p^r} $$ where $B_{p-{\bfk}}=B_{p-k_1}B_{p-k_2}\cdots B_{p-k_t}$ are products of Bernoulli numbers andthe coefficients $C_{m,{\bf k}}$ are polynomials of $m$ independent of $p$ and$r$. This generalizes previous results by many different authors and confirms aconjecture by the authors and their collaborators.

Super Congruences Involving Multiple Harmonic Sums and Bernoulli Numbers