6 points
Because the other comment had a useless counterproductive step in it, namely base64.
5 points
*
Maybe, but also I think I was looking at the raw ‘data bits’, not ‘binary’ data. It’s actually almost exactly 4GiB, even when dropping down to minimum error correction (1.7 GiB otherwise).
(1454942×2953)÷1024÷1024÷1024≈4.00
Edit: So if alphanumeric mode could store lowercase letters, base64 would’ve stored more.
