Further aggravating: "4k" isn't "four thousand (and 96 in binary pocket change)", it's the marketing-by-association of noting that "true 4k" at 4096 is "close enough" as the consequence of taking a 4096x2160 display and feeding it 16:9 content, then trimming the resulting side black bars.

More detail at http://en.wikipedia.org/wiki/4K_resolution