529 in Roman Numerals

529

DXXI (subtracted)X

five hundred twenty-nine

How DXXIX is formed

PlaceValueSymbols
Hundreds500D
Tens20XX
Units9I (subtracted)X
Total529DXXIX

DXXIX is written one place at a time, from the largest to the smallest: D (500) + XX (20) + IX (9) = 529.

IX is the only subtraction: the I before the X takes away 1, so IX = 9.

Common mistakes

Wrong: DXXVIIII

Why isn't 529 written as DXXVIIII?

A symbol can't be repeated four times in a row. 9 is IX (10 − 1), not VIIII, so 529 is DXXIX.

Numbers near 529

Properties of 529

Prime factors
23²
Divisors
1, 23, 529
Even or odd
Odd
Prime number
No
Letters in DXXIX
5

529 is a perfect square: 23 × 23.

529,000 in Roman numerals

With a bar over it (vinculum), D̅X̅X̅I̅X̅ means 529 × 1,000 = 529,000. How Roman numerals work

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