287
CWE-287 is improper authentication.
- Odd
- Composite
Where 287 fits
Why 287 is special
It is the parent category for everything from accepting an empty password to trusting a token nobody verified, which is why it appears so often in advisories.
Factors & digit properties
- Divisors (4)
- 1, 7, 41, 287
- Prime factorisation
- 7 × 41
- Digit sum
- 17
- Digital root
- 8
Representations
- Decimal
- 287
- Binary
- 100011111
- Octal
- 437
- Hexadecimal
- 11f
- Roman numeral
- CCLXXXVII
- Scientific notation
- 2.870 × 10^2
Other mathematical patterns
- Deficient number
- Pentagonal number
- Semiprime
Related numbers & connections
Entity authentication mechanisms are the standardised answer to the weakness class of improper authentication.
View 9798 →Technology & computing
CWE-287 covers software that does not correctly prove a claimed identity. Several more specific weaknesses, including missing authentication and improper credential handling, sit beneath it.
DocumentedTechnology & computingGeography: International — MITRE CWEPeriod: 2006–
Common questions
Is 287 a prime number?
No, 287 is not prime.
What are the factors of 287?
The factors of 287 are 1, 7, 41, 287.
What is 287 in Roman numerals?
287 in Roman numerals is CCLXXXVII.
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