Max formula with created date column

I'm having a very weird issue. I'm trying to use the Max function to deliver the most recent created date. I have a column type with created date which I have named "created". I've input the following formula =Max(Date:Date) and I keep getting an "invalid column value" error. What am I doing wrong? I would eventually like to nest this in to an IF statement whereby it puts a checkmark in the most recently added row which I can then filter by in a report. Thanks for your time and help!


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