The Roman numeral MCXLIII corresponds to the Arabic number 1143.
MCXLIII = 1143
Symbols are written and read from left to right, from highest to lowest.
If number MCXLIII is within to text or sentence it should be read in its equivalent in Arabic numbers, in this case 1143.
MCXLII is number 1142
MCXLIV is number 1144
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