8. Arrange $1,2, \cdots, n^{2}$ in a clockwise spiral pattern into an $n$ by $n$ table $T_{n}$, with the first row being $1,2, \cdots, n$. For example, $T_{3}=\left[\begin{array}{lll}1 & 2 & 3 \\ 8 & 9 & 4 \\ 7 & 6 & 5\end{array}\right]$. Let 2018 be in the $i$-th row and $j$-th column of $T_{100}$. Then $(i, j)=$ $\qquad$
8. $(34,95)$.

Let $1 \leqslant k \leqslant 50$.
Then the element in the $k$-th row and $k$-th column of $T_{100}$ is
$$
\begin{array}{l}
1+4 \sum_{i=1}^{k-1}(101-2 i) \\
=1+4(101-k)(k-1) .
\end{array}
$$

Therefore, 1901 is in the 6th row and 6th column, 1990 is in the 6th row and 95th column, 2018 is in the 34th row and 95th column.