Numberwise

6826

NGC 6826 is the Blinking Planetary.

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Where 6826 fits

Where 6826 fits: Mathematics, Related numbersMathematics: Semiprime. Related numbers: 3242.MathematicsSemiprimeRelated numbers32426826
6826 connects to 2 worlds: mathematics, related numbers.

Why 6826 is special

Looking directly at it makes it seem to vanish and looking slightly aside brings it back, because the eye's periphery is more sensitive to faint light.

Factors & digit properties

Divisors (4)
1, 2, 3413, 6826
Prime factorisation
2 × 3413
Digit sum
22
Digital root
4

Representations

Decimal
6826
Scientific notation
6.826 × 10^3

Roman numerals

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

Binary

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

1 × 4,096 + 1 × 2,048 + 0 × 1,024 + 1 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 6,826

Octal

1 5 2 5 2

1 × 4,096 + 5 × 512 + 2 × 64 + 5 × 8 + 2 × 1 = 6,826

Hexadecimal

1 a a a

1 × 4,096 + a × 256 + a × 16 + a × 1 = 6,826

Read as powers of two: 4,096 + 2,048 + 512 + 128 + 32 + 8 + 2 = 6,826.

In historical numeral systems

Egyptian

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

6 × 1,000 + 8 × 100 + 2 × 10 + 6 × 1 = 6,826. 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

Related numbers & connections

Connection
The Blinking Planetary and the Ghost of Jupiter are both named from visual impressions at the eyepiece.

The Blinking Planetary and the Ghost of Jupiter are both named from visual impressions at the eyepiece.

View 3242 →

Other connections

  • is associated with3242
    why?

    Strength 0.50, confidence "high".

How is 6826 connected to another number? →

Science

  • NGC 6826 has a bright central star and a fainter shell. Direct vision favours the star and averted vision the nebula, producing the apparent blinking.

    DocumentedSciencePeriod: 1793–

Common questions

Is 6826 a prime number?

No, 6826 is not prime.

What are the factors of 6826?

The factors of 6826 are 1, 2, 3413, 6826.

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