3168
RFC 3168 defines explicit congestion notification.
- Even
- Composite
Where 3168 fits
Why 3168 is special
It lets a router signal congestion by marking a packet rather than dropping it, and deployment stalled for years because middleboxes discarded the marked packets.
3168 is part of
Factors & digit properties
- Divisors (36)
- 1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 32, 33, 36, 44, 48, 66, 72, 88, 96, 99, 132, 144, 176, 198, 264, 288, 352, 396, 528, 792, 1056, 1584, 3168
- Prime factorisation
- 2^5 × 3^2 × 11
- Digit sum
- 18
- Digital root
- 9
Representations
- Decimal
- 3168
- Scientific notation
- 3.168 × 10^3
Roman numerals
M M M C L X V I I I
Binary
1 1 0 0 0 1 1 0 0 0 0 0
1 × 2,048 + 1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 3,168
Octal
6 1 4 0
6 × 512 + 1 × 64 + 4 × 8 + 0 × 1 = 3,168
Hexadecimal
c 6 0
c × 256 + 6 × 16 + 0 × 1 = 3,168
Read as powers of two: 2,048 + 1,024 + 64 + 32 = 3,168.
In historical numeral systems
Egyptian
3 lotuses, 1 coil of rope, 6 hobbles, 8 strokes
3 × 1,000 + 1 × 100 + 6 × 10 + 8 × 1 = 3,168. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
5 corner wedges + 2 vertical wedges (sixties place), 4 corner wedges + 8 vertical wedges (units place)
52 × 60 + 48 = 3168. Places are separated by a space on the tablet, with the higher place written first.
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
- Abundant number
- Harshad (Niven) number
Related numbers & connections
Explicit congestion notification lets a router signal load by marking a packet rather than discarding it.
ECN and the differentiated services field share the same redefined header byte.
View 2474 →Numbers Around Us
- appears inNumbers that make the internet work
why?
Strength 0.50, confidence "high".
Other connections
- is associated with2474
why?
Strength 0.50, confidence "high".
Technology & computing
RFC 3168 specifies ECN, adding IP and TCP fields so congestion can be indicated by marking rather than loss. Middlebox interference delayed deployment substantially.
DocumentedTechnology & computingGeography: International — IETFPeriod: 2001
Common questions
Is 3168 a prime number?
No, 3168 is not prime.
What are the factors of 3168?
The factors of 3168 are 1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 32, 33, 36, 44, 48, 66, 72, 88, 96, 99, 132, 144, 176, 198, 264, 288, 352, 396, 528, 792, 1056, 1584, 3168.
What is 3168 in Roman numerals?
3168 in Roman numerals is MMMCLXVIII.
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