223
+223 is the international calling code for Mali.
- Odd
- Prime
Where 223 fits
Why 223 is special
Mali contains Timbuktu, which held one of the largest collections of medieval manuscripts in Africa. Many were evacuated in secret in 2012 to protect them.
223 is part of
Factors & digit properties
- Divisors (2)
- 1, 223
- Prime factorisation
- 223
- Digit sum
- 7
- Digital root
- 7
Representations
- Decimal
- 223
- Scientific notation
- 2.230 × 10^2
Roman numerals
C C X X I I I
Binary
1 1 0 1 1 1 1 1
1 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 223
Octal
3 3 7
3 × 64 + 3 × 8 + 7 × 1 = 223
Hexadecimal
d f
d × 16 + f × 1 = 223
Read as powers of two: 128 + 64 + 16 + 8 + 4 + 2 + 1 = 223.
In historical numeral systems
Egyptian
2 coils of rope, 2 hobbles, 3 strokes
2 × 100 + 2 × 10 + 3 × 1 = 223. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
3 vertical wedges (sixties place), 4 corner wedges + 3 vertical wedges (units place)
3 × 60 + 43 = 223. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
sigma, then kappa, then gamma, marked as a numeral
sigma-kappa-gamma + keraia
sigma + kappa + gamma written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
resh, then kaf, then gimel
resh-kaf-gimel
resh (200) + kaf (20) + gimel (3) = 223, written in descending order.
Maya
2 bars + 1 dot (upper, twenties place) over 3 dots (lower, units place)
11 × 20 + 3 = 223. Places stack vertically with the smallest at the bottom, so the upper group is worth twenty times the lower.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Deficient number
- Lucky number (mathematical sieve)
Related numbers & connections
Mauritania and Mali share a long Saharan border. Mauritania was the last country in the world to criminalise slavery, in 2007.
View 222 →Geography
+223 reaches Mali. Tens of thousands of Timbuktu manuscripts were smuggled out of the city in 2012 to protect them from destruction, an operation conducted largely by librarians.
DocumentedGeographyGeography: Mali
Common questions
Is 223 a prime number?
Yes, 223 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 223?
The factors of 223 are 1, 223.
What is 223 in Roman numerals?
223 in Roman numerals is CCXXIII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026