My S1R shoots at 26 megapixels in 65:24 mode. If I need more resolution I could use the high resolution mode on the S1R and get 103 megapixels after cropping to 65:24.
My fp L is about 39 megapixels in its 21:9 mode.
A 100 megapixel GFX is about 50 megapixels in 65:24 mode.
The blends from my 4 camera pano rig, that gives swing lens like perspective, end up around 30-40 megapixels.
If I want pano on film I can shoot a Kraken 617 which has about 9075 mm^2 of film area. Or a Kraken 624 with 12375 mm^2.