trying to beat this, and this is one of the more horrifying ways i've managed to tie it

kinda fucks me up that there's no one-byte "is even"

also this is a funny 8-byter

...still 7, but til that this works

(i did already do ṢUḊm2SH, but had no idea you could give a negative argument to m until i saw m0 in an unrelated answer just now lol)

Does this work?