279
279 Thule sits in a rare resonance with Jupiter.
- Odd
- Composite
Where 279 fits
Why 279 is special
Its 4:3 resonance is occupied by very few objects, and the near-emptiness of such regions is what makes them informative.
Factors & digit properties
- Divisors (6)
- 1, 3, 9, 31, 93, 279
- Prime factorisation
- 3^2 × 31
- Digit sum
- 18
- Digital root
- 9
Representations
- Decimal
- 279
- Scientific notation
- 2.790 × 10^2
Roman numerals
C C L X X I X
CCLXXIX uses the subtractive pair IX: one before ten — ten minus one.
Binary
1 0 0 0 1 0 1 1 1
1 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 1 × 16 + 0 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 279
Octal
4 2 7
4 × 64 + 2 × 8 + 7 × 1 = 279
Hexadecimal
1 1 7
1 × 256 + 1 × 16 + 7 × 1 = 279
Read as powers of two: 256 + 16 + 4 + 2 + 1 = 279.
In historical numeral systems
Egyptian
2 coils of rope, 7 hobbles, 9 strokes
2 × 100 + 7 × 10 + 9 × 1 = 279. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
4 vertical wedges (sixties place), 3 corner wedges + 9 vertical wedges (units place)
4 × 60 + 39 = 279. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
sigma, then omicron, then theta, marked as a numeral
sigma-omicron-theta + keraia
sigma + omicron + theta 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 ayin, then tet
resh-ayin-tet
resh (200) + ayin (70) + tet (9) = 279, written in descending order.
Maya
2 bars + 3 dots (upper, twenties place) over 3 bars + 4 dots (lower, units place)
13 × 20 + 19 = 279. 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
Related numbers & connections
Both occupy resonances with Jupiter, one nearly empty and one that manufactures Earth-crossing orbits.
View 887 →Other connections
- is associated with887
why?
Strength 0.50, confidence "high".
Science
279 Thule orbits in a 4:3 mean-motion resonance with Jupiter, a region occupied by a very small number of known asteroids.
DocumentedSciencePeriod: 1888–
Common questions
Is 279 a prime number?
No, 279 is not prime.
What are the factors of 279?
The factors of 279 are 1, 3, 9, 31, 93, 279.
What is 279 in Roman numerals?
279 in Roman numerals is CCLXXIX. IX is subtractive: one before ten — ten minus one. Written additively it would be CCLXXVIIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
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