6667
Port 6667 is the port IRC actually ran on.
- Odd
- Composite
Where 6667 fits
Why 6667 is special
IRC's registered port is 194, but 194 is privileged and 6667 is not, so essentially every network used 6667 instead. It is a clean illustration of a registry recording an intention that practice ignored.
Factors & digit properties
- Divisors (4)
- 1, 59, 113, 6667
- Prime factorisation
- 59 × 113
- Digit sum
- 25
- Digital root
- 7
Representations
- Decimal
- 6667
- Scientific notation
- 6.667 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 1 0 1 0 0 0 0 0 1 0 1 1
1 × 4,096 + 1 × 2,048 + 0 × 1,024 + 1 × 512 + 0 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 1 × 1 = 6,667
Octal
1 5 0 1 3
1 × 4,096 + 5 × 512 + 0 × 64 + 1 × 8 + 3 × 1 = 6,667
Hexadecimal
1 a 0 b
1 × 4,096 + a × 256 + 0 × 16 + b × 1 = 6,667
Read as powers of two: 4,096 + 2,048 + 512 + 8 + 2 + 1 = 6,667.
In historical numeral systems
Egyptian
6 lotuses, 6 coils of rope, 6 hobbles, 7 strokes
6 × 1,000 + 6 × 100 + 6 × 10 + 7 × 1 = 6,667. 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
- Semiprime
- Lucky number (mathematical sieve)
Related numbers & connections
IRC's registered port against the one it actually used. 194 requires privileges and 6667 does not, and practice followed convenience rather than the registry.
View 194 →Other connections
- contrasts with194
why?
Strength 0.50, confidence "high".
Technology & computing
IRC's assigned port is 194 and almost nothing used it, because 194 requires privileges and 6667 does not. The gap between the two numbers is a clean demonstration of how little a registry binds practice when the registered choice is inconvenient.
DocumentedTechnology & computing
Common questions
Is 6667 a prime number?
No, 6667 is not prime.
What are the factors of 6667?
The factors of 6667 are 1, 59, 113, 6667.
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