9051
Port 9051 is Tor's control port.
- Odd
- Composite
Where 9051 fits
Why 9051 is special
It lets software instruct the Tor process — request a new circuit, query status. Exposing it to anything untrusted hands over control of the client entirely.
Factors & digit properties
- Divisors (8)
- 1, 3, 7, 21, 431, 1293, 3017, 9051
- Prime factorisation
- 3 × 7 × 431
- Digit sum
- 15
- Digital root
- 6
Representations
- Decimal
- 9051
- Scientific notation
- 9.051 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 0 0 0 1 1 0 1 0 1 1 0 1 1
1 × 8,192 + 0 × 4,096 + 0 × 2,048 + 0 × 1,024 + 1 × 512 + 1 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 1 × 1 = 9,051
Octal
2 1 5 3 3
2 × 4,096 + 1 × 512 + 5 × 64 + 3 × 8 + 3 × 1 = 9,051
Hexadecimal
2 3 5 b
2 × 4,096 + 3 × 256 + 5 × 16 + b × 1 = 9,051
Read as powers of two: 8,192 + 512 + 256 + 64 + 16 + 8 + 2 + 1 = 9,051.
In historical numeral systems
Egyptian
9 lotuses, 5 hobbles, 1 stroke
9 × 1,000 + 5 × 10 + 1 × 1 = 9,051. 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
Tor's SOCKS port carries traffic and its control port manages the process. Anything that can reach the control port can deanonymise the client, which is why it binds to localhost only.
View 9050 →Technology & computing
9050 carries traffic and 9051 controls the process. Anything that can reach the control port can reconfigure or deanonymise the client, which is why it binds to localhost only.
DocumentedTechnology & computing
Common questions
Is 9051 a prime number?
No, 9051 is not prime.
What are the factors of 9051?
The factors of 9051 are 1, 3, 7, 21, 431, 1293, 3017, 9051.
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