611
CWE-611 is XML external entity injection.
- Odd
- Composite
Where 611 fits
Why 611 is special
An XML parser that resolves external references will happily fetch a local file and return it, which turns a document format into a file reader.
Factors & digit properties
- Divisors (4)
- 1, 13, 47, 611
- Prime factorisation
- 13 × 47
- Digit sum
- 8
- Digital root
- 8
Representations
- Decimal
- 611
- Scientific notation
- 6.110 × 10^2
Roman numerals
D C X I
Binary
1 0 0 1 1 0 0 0 1 1
1 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 1 × 2 + 1 × 1 = 611
Octal
1 1 4 3
1 × 512 + 1 × 64 + 4 × 8 + 3 × 1 = 611
Hexadecimal
2 6 3
2 × 256 + 6 × 16 + 3 × 1 = 611
Read as powers of two: 512 + 64 + 32 + 2 + 1 = 611.
In historical numeral systems
Egyptian
6 coils of rope, 1 hobble, 1 stroke
6 × 100 + 1 × 10 + 1 × 1 = 611. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge (sixties place), 1 corner wedge + 1 vertical wedge (units place)
10 × 60 + 11 = 611. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
chi, then iota, then alpha, marked as a numeral
chi-iota-alpha + keraia
chi + iota + alpha written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
tav, then resh, then yod, then alef
tav-resh-yod-alef
tav (400) + resh (200) + yod (10) + alef (1) = 611, written in descending order.
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
Related numbers & connections
An XML parser resolving external entities can be made to fetch internal URLs, which is how XXE becomes server-side request forgery.
View 918 →Other connections
- is associated with918
why?
Strength 0.50, confidence "high".
Technology & computing
CWE-611 covers XML processors configured to resolve external entities in untrusted documents, permitting local file disclosure and server-side request forgery. Disabling entity resolution is the standard mitigation.
DocumentedTechnology & computingGeography: International — MITRE CWEPeriod: 2006–
Common questions
Is 611 a prime number?
No, 611 is not prime.
What are the factors of 611?
The factors of 611 are 1, 13, 47, 611.
What is 611 in Roman numerals?
611 in Roman numerals is DCXI.
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