6523
NGC 6523 is the Lagoon Nebula.
- Odd
- Composite
Where 6523 fits
Why 6523 is special
It is one of the few emission nebulae visible to the naked eye from mid-northern latitudes, though only as a faint patch.
Factors & digit properties
- Divisors (4)
- 1, 11, 593, 6523
- Prime factorisation
- 11 × 593
- Digit sum
- 16
- Digital root
- 7
Representations
- Decimal
- 6523
- Binary
- 1100101111011
- Octal
- 14573
- Hexadecimal
- 197b
- Scientific notation
- 6.523 × 10^3
Other mathematical patterns
- Deficient number
- Semiprime
- Lucky number (mathematical sieve)
Related numbers & connections
ConnectionBoth are naked-eye emission nebulae from southern latitudes, and both are active star-forming regions.
6523 is associated with 3372Both are naked-eye emission nebulae from southern latitudes, and both are active star-forming regions.
Both are naked-eye emission nebulae from southern latitudes, and both are active star-forming regions.
View 3372 →Other connections
- is associated with3372
why?
Strength 0.50, confidence "high".
Science
NGC 6523 is a large emission nebula and active star-forming region in Sagittarius, faintly detectable by eye under dark skies.
DocumentedSciencePeriod: 1654–
Common questions
Is 6523 a prime number?
No, 6523 is not prime.
What are the factors of 6523?
The factors of 6523 are 1, 11, 593, 6523.
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: 3 August 2026