7129
NGC 7129 is a young reflection nebula with Herbig-Haro objects.
- Odd
- Prime
Where 7129 fits
Why 7129 is special
The jets visible in it come from stars still forming, which are among the few directly observable signs of accretion in progress.
7129 is part of
Factors & digit properties
- Divisors (2)
- 1, 7129
- Prime factorisation
- 7129
- Digit sum
- 19
- Digital root
- 1
Representations
- Decimal
- 7129
- Scientific notation
- 7.129 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 1 0 1 1 1 1 0 1 1 0 0 1
1 × 4,096 + 1 × 2,048 + 0 × 1,024 + 1 × 512 + 1 × 256 + 1 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 7,129
Octal
1 5 7 3 1
1 × 4,096 + 5 × 512 + 7 × 64 + 3 × 8 + 1 × 1 = 7,129
Hexadecimal
1 b d 9
1 × 4,096 + b × 256 + d × 16 + 9 × 1 = 7,129
Read as powers of two: 4,096 + 2,048 + 512 + 256 + 128 + 64 + 16 + 8 + 1 = 7,129.
In historical numeral systems
Egyptian
7 lotuses, 1 coil of rope, 2 hobbles, 9 strokes
7 × 1,000 + 1 × 100 + 2 × 10 + 9 × 1 = 7,129. 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)
- Twin prime
Related numbers & connections
Both are young reflection nebulae associated with ongoing star formation.
View 5146 →Other connections
- is associated with5146
why?
Strength 0.50, confidence "high".
Science
NGC 7129 is a reflection nebula containing Herbig-Haro objects, shock fronts produced where jets from protostars collide with surrounding material.
DocumentedSciencePeriod: 1788–
Common questions
Is 7129 a prime number?
Yes, 7129 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 7129?
The factors of 7129 are 1, 7129.
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