XDCCLXXX
XDCCLXXX is a sequence of Roman numeral letters that can be interpreted as a numeral, though it uses a nonstandard form. In one noncanonical reading, XD is taken as 490, CC adds 200, and LXXX adds 80, yielding a total of 770.
In standard Roman numeral notation, XD is not a valid subtractive pair. The conventional representation for
Beyond numeric value, XDCCLXXX may appear as a label, filename, project code, or stylistic identifier in digital
Because of its noncanonical nature, XDCCLXXX is mostly of interest in discussions of numeral notation or as
See also: Roman numerals, subtractive notation, CDXC, DCCLXX, canonical numeral forms.