9100
Port 9100 is raw printing — send bytes, get paper.
- Even
- Composite
Where 9100 fits
Why 9100 is special
There is no authentication and no protocol to speak of: anything sent to 9100 is printed. Exposed printers on this port have been used repeatedly to print unsolicited material at scale across universities and companies.
9100 is part of
Factors & digit properties
- Divisors (36)
- 1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 175, 182, 260, 325, 350, 364, 455, 650, 700, 910, 1300, 1820, 2275, 4550, 9100
- Prime factorisation
- 2^2 × 5^2 × 7 × 13
- Digit sum
- 10
- Digital root
- 1
Representations
- Decimal
- 9100
- Binary
- 10001110001100
- Octal
- 21614
- Hexadecimal
- 238c
- Scientific notation
- 9.100 × 10^3
Other mathematical patterns
- Abundant number
- Happy number
- Harshad (Niven) number
Related numbers & connections
Two printing ports with opposite designs: IPP negotiates capabilities and raw printing on 9100 accepts any byte stream. The second has no authentication at all, which is why exposed printers produce unsolicited output.
View 631 →Other connections
- is associated with631
why?
Strength 0.50, confidence "high".
Technology & computing
Port 9100 accepts a raw byte stream and prints it. There is nothing to authenticate against, so an internet-facing printer will print whatever anyone sends — which has happened at scale often enough to be a recognised nuisance category.
DocumentedTechnology & computing
Common questions
Is 9100 a prime number?
No, 9100 is not prime.
What are the factors of 9100?
The factors of 9100 are 1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 175, 182, 260, 325, 350, 364, 455, 650, 700, 910, 1300, 1820, 2275, 4550, 9100.
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