The Roman numeral MDXLIII corresponds to the Arabic number 1543.
MDXLIII = 1543
Symbols are written and read from left to right, from highest to lowest.
If number MDXLIII is within to text or sentence it should be read in its equivalent in Arabic numbers, in this case 1543.
MDXLII is number 1542
MDXLIV is number 1544
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