829
CWE-829 is inclusion of functionality from an untrusted control sphere.
- Odd
- Prime
Where 829 fits
Why 829 is special
It is the supply chain weakness: the code was not attacked, it was invited in, by a build that fetches whatever the registry serves.
829 is part of
Factors & digit properties
- Divisors (2)
- 1, 829
- Prime factorisation
- 829
- Digit sum
- 19
- Digital root
- 1
Representations
- Decimal
- 829
- Scientific notation
- 8.290 × 10^2
Roman numerals
D C C C X X I X
DCCCXXIX uses the subtractive pair IX: one before ten — ten minus one.
Binary
1 1 0 0 1 1 1 1 0 1
1 × 512 + 1 × 256 + 0 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 0 × 2 + 1 × 1 = 829
Octal
1 4 7 5
1 × 512 + 4 × 64 + 7 × 8 + 5 × 1 = 829
Hexadecimal
3 3 d
3 × 256 + 3 × 16 + d × 1 = 829
Read as powers of two: 512 + 256 + 32 + 16 + 8 + 4 + 1 = 829.
In historical numeral systems
Egyptian
8 coils of rope, 2 hobbles, 9 strokes
8 × 100 + 2 × 10 + 9 × 1 = 829. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 3 vertical wedges (sixties place), 4 corner wedges + 9 vertical wedges (units place)
13 × 60 + 49 = 829. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
omega, then kappa, then theta, marked as a numeral
omega-kappa-theta + keraia
omega + kappa + theta 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 tav, then kaf, then tet
tav-tav-kaf-tet
tav (400) + tav (400) + kaf (20) + tet (9) = 829, 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
- Twin prime
Related numbers & connections
Pulling in code from outside the trust boundary and depending on code nobody maintains are the two halves of supply chain risk.
View 1104 →Other connections
- is associated with1104
why?
Strength 0.50, confidence "high".
Technology & computing
CWE-829 covers software incorporating functionality from a source outside its trust boundary, including remotely fetched scripts and build-time dependencies resolved at install.
DocumentedTechnology & computingGeography: International — MITRE CWEPeriod: 2006–
Common questions
Is 829 a prime number?
Yes, 829 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 829?
The factors of 829 are 1, 829.
What is 829 in Roman numerals?
829 in Roman numerals is DCCCXXIX. IX is subtractive: one before ten — ten minus one. Written additively it would be DCCCXXVIIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
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