6946
NGC 6946 is the Fireworks Galaxy.
- Even
- Composite
Where 6946 fits
Why 6946 is special
Ten supernovae have been recorded in it within a century, more than in any other galaxy, which makes it a standing target for supernova searches.
Factors & digit properties
- Divisors (8)
- 1, 2, 23, 46, 151, 302, 3473, 6946
- Prime factorisation
- 2 × 23 × 151
- Digit sum
- 25
- Digital root
- 7
Representations
- Decimal
- 6946
- Scientific notation
- 6.946 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 1 0 1 1 0 0 1 0 0 0 1 0
1 × 4,096 + 1 × 2,048 + 0 × 1,024 + 1 × 512 + 1 × 256 + 0 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 6,946
Octal
1 5 4 4 2
1 × 4,096 + 5 × 512 + 4 × 64 + 4 × 8 + 2 × 1 = 6,946
Hexadecimal
1 b 2 2
1 × 4,096 + b × 256 + 2 × 16 + 2 × 1 = 6,946
Read as powers of two: 4,096 + 2,048 + 512 + 256 + 32 + 2 = 6,946.
In historical numeral systems
Egyptian
6 lotuses, 9 coils of rope, 4 hobbles, 6 strokes
6 × 1,000 + 9 × 100 + 4 × 10 + 6 × 1 = 6,946. 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
Related numbers & connections
Both are large spirals close to the galactic plane, where Milky Way dust dims what would otherwise be prominent.
View 342 →Science
NGC 6946 is a face-on spiral in which ten supernovae have been observed since 1917, the highest count recorded for any single galaxy.
DocumentedSciencePeriod: 1798–
Common questions
Is 6946 a prime number?
No, 6946 is not prime.
What are the factors of 6946?
The factors of 6946 are 1, 2, 23, 46, 151, 302, 3473, 6946.
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