The Roman numeral DCCXLIII corresponds to the Arabic number 743.
DCCXLIII = 743
Symbols are written and read from left to right, from highest to lowest.
If number DCCXLIII is within to text or sentence it should be read in its equivalent in Arabic numbers, in this case 743.
DCCXLII is number 742
DCCXLIV is number 744
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