Prime Comic Numbers

\[\Large ...13121110987654321 \text{ is prime?}\]

Let us define a comic number as one that is created by concatenating all of the integers from \(1\) to \(n\), left to right, in descending order. For example, if we let \(n=12\), then our comic number would be \(121110987654321\). What is the first value of \(n\) such that its corresponding comic number is prime?

I got the name "comic number" from the term Descending Concatenation, or D.C. for short.
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