4287
RFC 4287 defines the Atom syndication format.
- Odd
- Composite
Where 4287 fits
Why 4287 is special
It was written to fix the ambiguities of RSS with a properly specified format, and RSS remained more widely deployed anyway.
4287 is part of
Factors & digit properties
- Divisors (4)
- 1, 3, 1429, 4287
- Prime factorisation
- 3 × 1429
- Digit sum
- 21
- Digital root
- 3
Representations
- Decimal
- 4287
- Scientific notation
- 4.287 × 10^3
Roman numerals
Roman numerals as modelled here goes up to 3,999.
Binary
1 0 0 0 0 1 0 1 1 1 1 1 1
1 × 4,096 + 0 × 2,048 + 0 × 1,024 + 0 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 4,287
Octal
1 0 2 7 7
1 × 4,096 + 0 × 512 + 2 × 64 + 7 × 8 + 7 × 1 = 4,287
Hexadecimal
1 0 b f
1 × 4,096 + 0 × 256 + b × 16 + f × 1 = 4,287
Read as powers of two: 4,096 + 128 + 32 + 16 + 8 + 4 + 2 + 1 = 4,287.
In historical numeral systems
Egyptian
4 lotuses, 2 coils of rope, 8 hobbles, 7 strokes
4 × 1,000 + 2 × 100 + 8 × 10 + 7 × 1 = 4,287. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
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
- Happy number
- Semiprime
- Lucky number (mathematical sieve)
Related numbers & connections
Atom defines the feed format and AtomPub the protocol for editing the resources it describes.
View 5023 →Other connections
- is associated with5023
why?
Strength 0.50, confidence "high".
Technology & computing
RFC 4287 specifies Atom, an XML feed format with mandatory identifiers and dates. It was developed in response to inconsistencies among RSS versions, which nonetheless retained wider adoption.
DocumentedTechnology & computingGeography: International — IETFPeriod: 2005
Common questions
Is 4287 a prime number?
No, 4287 is not prime.
What are the factors of 4287?
The factors of 4287 are 1, 3, 1429, 4287.
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