343 in Roman Numerals
343
CCCX (subtracted)LIII
three hundred forty-three
How CCCXLIII is formed
| Place | Value | Symbols |
|---|---|---|
| Hundreds | 300 | CCC |
| Tens | 40 | X (subtracted)L |
| Units | 3 | III |
| Total | 343 | CCCXLIII |
CCCXLIII is written one place at a time, from the largest to the smallest: CCC (300) + XL (40) + III (3) = 343.
XL is the only subtraction: the X before the L takes away 10, so XL = 40.
Common mistakes
Wrong: CCCXXXXIII
Why isn't 343 written as CCCXXXXIII?
A symbol can't be repeated four times in a row. 40 is XL (50 − 10), not XXXX, so 343 is CCCXLIII.
Numbers near 343
Properties of 343
- Prime factors
- 7³
- Divisors
- 1, 7, 49, 343
- Even or odd
- Odd
- Prime number
- No
- Letters in CCCXLIII
- 8
343 is a perfect cube: 7 × 7 × 7.
343,000 in Roman numerals
With a bar over it (vinculum), C̅C̅C̅X̅L̅I̅I̅I̅ means 343 × 1,000 = 343,000. How Roman numerals work