[M2Fasa]

Hi everyone, prospective M2C owner here, about to pull the trigger on a 2019, 6MT example. While the car passed inspection at dealership and everything seems fine, a few small details around the owner lead me to suspect that this car might have ben a rental. One of these details is how the paired iphone is listed in the idrive.
This might be silly but the only phone paired with the car shows up as “iPhone(86)”
Does this mean iphones have been paired 86 times with this car?
On my e class, newly paired, unnamed iphones also show up this way and number in parenthesis increases with each new phone consecutively. On the other hand, I saw threads on apple platforms where they mentioned the number just being a random differentiator. I thought who better to ask then owners with experience. Thanks in advance!