I've gone over a month on a PC, and probably more. I only reboot my macbook when there's an update that needs me to. It's better to reboot PCs regularly, so unless you're trying to set some sort of record, I'd reboot it.
I am sort of going for a record. I believe that's the highest It's gotten since I've bought this PC. Windows update always ends up rebooting my shit while I'm asleep lol.