Arithmetic properties of the Ramanujan function

Details Arithmetic properties of the Ramanujan function Arithmetic properties of the Ramanujan function

2006-07-24

arxiv.org/abs/math/0607591v1

Mathematics

Number Theory

8 pages

Scientific paper

We study some arithmetic properties of the Ramanujan function $\tau(n)$, such as the largest prime divisor $P(\tau(n))$ and the number of distinct prime divisors $\omega(\tau(n))$ of $\tau(n)$ for various sequences of $n$. In particular, we show that \hbox{$P(\tau(n)) \geq (\log n)^{33/31 + o(1)}$} for infinitely many $n$, and \begin{equation*} P(\tau(p)\tau(p^2)\tau(p^3)) > (1+o(1))\frac{\log\log p\log\log\log p} {\log\log\log\log p} \end{equation*} for every prime $p$ with \hbox{$\tau(p)\neq 0$}.

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