The Roman numeral MMDXXIII corresponds to the Arabic number 2523.
MMDXXIII = 2523
Symbols are written and read from left to right, from highest to lowest.
If number MMDXXIII is within to text or sentence it should be read in its equivalent in Arabic numbers, in this case 2523.
MMDXXII is number 2522
MMDXXIV is number 2524
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