23. Given that $m$, $n$, and $l$ are all two-digit positive integers, and they are not all equal, their least common multiple is 385. Then the maximum value of $m+n+l$ is $\qquad$, and the minimum value is $\qquad$
23. 209,57.

Given $385=5 \times 11 \times 7$, to maximize $m+n+l$, we can take $m=n=77, l=55$; to minimize $m+n+l$, we can take $m=n=11, l=35$.