2873
Uranus orbits about 2,873 million km from the Sun.
- Odd
- Composite
Where 2873 fits
Why 2873 is special
It has been visited exactly once, by Voyager 2 in 1986, for a few hours. Everything known about it up close comes from that single pass, which is why proposals for an orbiter recur in every planetary science review.
Factors & digit properties
- Divisors (6)
- 1, 13, 17, 169, 221, 2873
- Prime factorisation
- 13^2 × 17
- Digit sum
- 20
- Digital root
- 2
Representations
- Decimal
- 2873
- Scientific notation
- 2.873 × 10^3
Roman numerals
M M D C C C L X X I I I
Binary
1 0 1 1 0 0 1 1 1 0 0 1
1 × 2,048 + 0 × 1,024 + 1 × 512 + 1 × 256 + 0 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 2,873
Octal
5 4 7 1
5 × 512 + 4 × 64 + 7 × 8 + 1 × 1 = 2,873
Hexadecimal
b 3 9
b × 256 + 3 × 16 + 9 × 1 = 2,873
Read as powers of two: 2,048 + 512 + 256 + 32 + 16 + 8 + 1 = 2,873.
In historical numeral systems
Egyptian
2 lotuses, 8 coils of rope, 7 hobbles, 3 strokes
2 × 1,000 + 8 × 100 + 7 × 10 + 3 × 1 = 2,873. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
4 corner wedges + 7 vertical wedges (sixties place), 5 corner wedges + 3 vertical wedges (units place)
47 × 60 + 53 = 2873. Places are separated by a space on the tablet, with the higher place written first.
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
Related numbers & connections
Uranus at about 2,873 million km is twice Saturn's distance and has been visited once, for a few hours, in 1986.
View 1434 →Science
Voyager 2's 1986 flyby remains the only close observation of Uranus ever made. A whole planet's detailed record rests on a few hours of data from a single spacecraft, which is why an orbiter is a standing priority in planetary science.
DocumentedScience
Common questions
Is 2873 a prime number?
No, 2873 is not prime.
What are the factors of 2873?
The factors of 2873 are 1, 13, 17, 169, 221, 2873.
What is 2873 in Roman numerals?
2873 in Roman numerals is MMDCCCLXXIII.
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