AWOL:
Though why anyone would consider expressing a literal of more than four bits in binary is beyond me.
I've seen (and used) occasions where on a single byte the placement of the high bits is more important than the value. Particularly bit-masking for flags, it's easier (for me) to see the 6th, 4th, 2nd and 1st bits are high (counting 1-8 starting with LSb on the right) on 0b00101101 instead of 0x2D or 45 (let alone 055 (yes, I can learn)).