Numberwise

6823

NGC 6823 is the cluster inside NGC 6820.

1 confirmed record · 1 sourceChecked, general knowledgeHow we qualify claimsReport a correction

Where 6823 fits

Where 6823 fits: Mathematics, Related numbersMathematics: Prime. Related numbers: 6820.MathematicsPrimeRelated numbers68206823
6823 connects to 2 worlds: mathematics, related numbers.

Why 6823 is special

The cluster and its nebula have adjacent catalogue numbers, which is unusual and reflects that they were recognised as a pair.

6823 is part of

Prime numbers

Factors & digit properties

Divisors (2)
1, 6823
Prime factorisation
6823
Digit sum
19
Digital root
1

Representations

Decimal
6823
Scientific notation
6.823 × 10^3

Roman numerals

Roman numerals as modelled here goes up to 3,999.

Binary

1 1 0 1 0 1 0 1 0 0 1 1 1

1 × 4,096 + 1 × 2,048 + 0 × 1,024 + 1 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 6,823

Octal

1 5 2 4 7

1 × 4,096 + 5 × 512 + 2 × 64 + 4 × 8 + 7 × 1 = 6,823

Hexadecimal

1 a a 7

1 × 4,096 + a × 256 + a × 16 + 7 × 1 = 6,823

Read as powers of two: 4,096 + 2,048 + 512 + 128 + 32 + 4 + 2 + 1 = 6,823.

In historical numeral systems

Egyptian

6 lotuses, 8 coils of rope, 2 hobbles, 3 strokes

6 × 1,000 + 8 × 100 + 2 × 10 + 3 × 1 = 6,823. 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

Documented appearance
A nebula and the cluster ionising it, carrying consecutive catalogue numbers.

A nebula and the cluster ionising it, carrying consecutive catalogue numbers.

View 6820 →
Connection
The cluster's massive stars are what light and erode the surrounding gas.

The cluster's massive stars are what light and erode the surrounding gas.

View 6820 →

Numbers Around Us

  • appears alongside6820
    why?

    Strength 0.50, confidence "high".

Other connections

  • is associated with6820
    why?

    Strength 0.50, confidence "high".

How is 6823 connected to another number? →

Science

  • NGC 6823 is a young open cluster whose massive stars ionise the surrounding nebula NGC 6820, the two objects carrying consecutive catalogue designations.

    DocumentedSciencePeriod: 1785–

Common questions

Is 6823 a prime number?

Yes, 6823 is prime — it has exactly two positive divisors: 1 and itself.

What are the factors of 6823?

The factors of 6823 are 1, 6823.

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