Number
743 in Roman numerals
743 is written DCCXLIII
Type any other number or numeral below to convert it.
Above 3,999? Type the barred part in brackets, e.g. (IV)CC = 4,200.
How DCCXLIII is built
Roman numerals are written one decimal place at a time, largest first.
- DCChundreds · 7D (500) plus CC (200) makes 700.
- XLtens · 4X before L means 50 − 10 = 40. This saves writing XXXX.
- IIIones · 3I written 3 times: 3 × 1 = 3.
700 + 40 + 3 = 743
The pair XL uses subtraction: a smaller letter before a larger one is taken away from it. Only six pairs work this way: IV, IX, XL, XC, CD and CM. More on subtraction
Mistakes to avoid
- Not DCCXXXXIII (10 letters). That adds everything up without subtraction. The Romans sometimes wrote numbers this way, and clocks still show 4 as IIII, but today DCCXLIII (8 letters) is the standard.
About the number 743
- 743 is a prime number: only 1 and 743 divide it exactly.
- DCCXLIII has 8 letters. 93 of the numbers up to 1,000 have longer numerals.
Counting from 741 to 750
Every number from 741 to 750 starts DCC (700); only the ending changes.
| Number | Roman numeral |
|---|---|
| 741 | DCCXLI |
| 742 | DCCXLII |
| 743 | DCCXLIII |
| 744 | DCCXLIV |
| 745 | DCCXLV |
| 746 | DCCXLVI |
| 747 | DCCXLVII |
| 748 | DCCXLVIII |
| 749 | DCCXLIX |
| 750 | DCCL |