Maximum render number of frames

Hello. I want to make 10 hours loop but when I render the project frames are cut to 300 000, I tried to change that in user preferences but I cann’t find an option for that. I need 1 000 000 frames to render what should I do?

Render in lots of 300,000 frames and then join the resulting animations
Render at a lower fps

it doesn’t make any sense :smiley:
are you telling me it is not possible in blender? fine I will try other software