What is the max size for Panorama?

Theoretically speaking, there is no restriction on the max size for QTVR panorama. You can output a large image as long as your computer have enough memory. The max size for Panorama depends on your computer configuration. While if you output panoramas as format of Easypano Virtual Tour Player, the max panorama size should not be larger than 5000*2500. For different usage, there are several recommended image size.
Web Dialup: 1400*700
Web Broadband: 4000*2000
CD: 6000*3000