The Weld-Blundell Prism https://en.wikipedia.org/wiki/Weld-Blundell_Prism doesn't use positional notation, so 5.50.0 is expressed as 𒐧𒐢 (five 3600, five 600) and 5.10.0 is expressed as 𒐧𒐞 (five 3600, one 600). (Lines 27-35, each number appearing twice separated by a line with 𒁹𒈗 (one king), if you want to follow along.)

This is besides the point, but you do have to marvel at the technology it took to make this comment render just fine in HN.