5139
NGC 5139 is Omega Centauri.
- Odd
- Composite
Where 5139 fits
Why 5139 is special
It is far larger than other globular clusters and contains stars of several different ages, which suggests it is the stripped core of a galaxy rather than a cluster at all.
Factors & digit properties
- Divisors (6)
- 1, 3, 9, 571, 1713, 5139
- Prime factorisation
- 3^2 × 571
- Digit sum
- 18
- Digital root
- 9
Representations
- Decimal
- 5139
- Scientific notation
- 5.139 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 0 1 0 0 0 0 0 1 0 0 1 1
1 × 4,096 + 0 × 2,048 + 1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 1 × 16 + 0 × 8 + 0 × 4 + 1 × 2 + 1 × 1 = 5,139
Octal
1 2 0 2 3
1 × 4,096 + 2 × 512 + 0 × 64 + 2 × 8 + 3 × 1 = 5,139
Hexadecimal
1 4 1 3
1 × 4,096 + 4 × 256 + 1 × 16 + 3 × 1 = 5,139
Read as powers of two: 4,096 + 1,024 + 16 + 2 + 1 = 5,139.
In historical numeral systems
Egyptian
5 lotuses, 1 coil of rope, 3 hobbles, 9 strokes
5 × 1,000 + 1 × 100 + 3 × 10 + 9 × 1 = 5,139. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
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
Omega Centauri holds stars of several ages, which is why it is read as a stripped galaxy nucleus rather than a cluster.
View 7078 →Science
NGC 5139 is the most massive globular cluster in the Milky Way. Multiple stellar populations with distinct compositions support the interpretation that it is the surviving nucleus of an absorbed dwarf galaxy.
DocumentedSciencePeriod: 1677–
Common questions
Is 5139 a prime number?
No, 5139 is not prime.
What are the factors of 5139?
The factors of 5139 are 1, 3, 9, 571, 1713, 5139.
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