160
E160 covers the carotenes.
- Even
- Composite
Where 160 fits
Why 160 is special
The same molecules give carrots their colour and are a precursor to vitamin A, which is why this additive is both a colour and a nutrient.
Factors & digit properties
- Divisors (12)
- 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160
- Prime factorisation
- 2^5 × 5
- Digit sum
- 7
- Digital root
- 7
Representations
- Decimal
- 160
- Scientific notation
- 1.600 × 10^2
Roman numerals
C L X
Binary
1 0 1 0 0 0 0 0
1 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 160
Octal
2 4 0
2 × 64 + 4 × 8 + 0 × 1 = 160
Hexadecimal
a 0
a × 16 + 0 × 1 = 160
Read as powers of two: 128 + 32 = 160.
In historical numeral systems
Egyptian
1 coil of rope, 6 hobbles
1 × 100 + 6 × 10 = 160. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 vertical wedges (sixties place), 4 corner wedges (units place)
2 × 60 + 40 = 160. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
rho, then xi, marked as a numeral
rho-xi + keraia
rho + xi written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
qof, then samekh
qof-samekh
qof (100) + samekh (60) = 160, written in descending order.
Maya
1 bar + 3 dots (upper, twenties place) over shell (zero) (lower, units place)
8 × 20 + 0 = 160. 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
- Abundant number
Related numbers & connections
Both are plant-derived colours, and one of them doubles as a vitamin A precursor.
View 140 →Other connections
- is associated with140
why?
Strength 0.50, confidence "high".
Everyday life
E160 designates carotenes and related compounds. Beta-carotene is converted to vitamin A in the body, so the additive functions as both colourant and nutrient source.
DocumentedEveryday lifeGeography: European Union and states adopting the E number systemPeriod: 1962–
Common questions
Is 160 a prime number?
No, 160 is not prime.
What are the factors of 160?
The factors of 160 are 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160.
What is 160 in Roman numerals?
160 in Roman numerals is CLX.
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