Biggest image on Wikipedia?

According to Submitterator user Frycook, the largest image on Wikipedia is a 25MB, 461 megapixel panorama of the interior of the Georgetown Power Plant Museum in Seattle. My browser refused to render it, and it crashed three image apps before I found one that I could snap a thumbnail out of.

Georgetown_PowerPlant_interior_pano.jpg (Thanks, Frycook, via Submitterator!)