Maximum value of backup-max-store-ms

[archmangler]

What is the maximum value supported by backup-max-store-ms? I can't find any clear documentation on this. For example, many configurations use 1 day (86400000 ms) but this is not of much use if you want to restore a state from some days ago (say 7 days ago):

com.netflix.exhibitor.backup-max-store-ms=86400000

I also see some configurations using 0 (which I assume means indefinite retention? However no documentation explicitly confirming that.

Given this, would a 7d retention expressed like this be valid and supported configuration in exhibitor 1.6.0:

com.netflix.exhibitor.backup-max-store-ms=604800000

Note: https://github.com/soabase/exhibitor/wiki/Configuration-UI describes "Max Save", but provides no indication of the maximum or minimum value permitted in ms.