Or as we used to refer to it several years ago 'Arthur's Code'.
This came about because early versions of The Sphere by Michael Crichton spelt it that way.
One of several mistakes in the text, actually. Another was a transmission of a block of digits they receive (and it was only digits in the text) that one character identifies as a hex dump. Shortly after another character claims it can't coming from a 68000 processor "because the 68000 doesn't work in hex".
The film was better. Just.