1263
UN 1263 covers paint and related material.
- Odd
- Composite
Where 1263 fits
Why 1263 is special
One number spans thousands of formulations, because the regulation classifies by flammability and packing group rather than by product.
Same number, different meanings
How 1263 is understood across different contexts — never implying one meaning because of another.
- Mathematics
One number spans thousands of formulations, because the regulation classifies by flammability and packing group rather than by product.
- History
In 1263, the battle of Largs ended Norwegian claims to the western isles (Scotland).
- Technology & computing
UN 1263 identifies paint, lacquer, enamel, thinning and removing compounds as flammable liquids, assigned to packing groups by flash point and boiling point.
1263 is part of
Factors & digit properties
- Divisors (4)
- 1, 3, 421, 1263
- Prime factorisation
- 3 × 421
- Digit sum
- 12
- Digital root
- 3
Representations
- Decimal
- 1263
- Scientific notation
- 1.263 × 10^3
Roman numerals
M C C L X I I I
Binary
1 0 0 1 1 1 0 1 1 1 1
1 × 1,024 + 0 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 1,263
Octal
2 3 5 7
2 × 512 + 3 × 64 + 5 × 8 + 7 × 1 = 1,263
Hexadecimal
4 e f
4 × 256 + e × 16 + f × 1 = 1,263
Read as powers of two: 1,024 + 128 + 64 + 32 + 8 + 4 + 2 + 1 = 1,263.
In historical numeral systems
Egyptian
1 lotus, 2 coils of rope, 6 hobbles, 3 strokes
1 × 1,000 + 2 × 100 + 6 × 10 + 3 × 1 = 1,263. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 1 vertical wedge (sixties place), 3 vertical wedges (units place)
21 × 60 + 3 = 1263. Places are separated by a space on the tablet, with the higher place written first.
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
- Lucky number (mathematical sieve)
Related numbers & connections
1263 is a year in the 13th century, in the 1260s.
Flammable liquids are grouped by flash point and boiling point rather than by what the product is for.
View 1203 →History
In 1263, the battle of Largs ended Norwegian claims to the western isles (Scotland).
DocumentedHistoryGeography: ScotlandPeriod: 1263
Technology & computing
UN 1263 identifies paint, lacquer, enamel, thinning and removing compounds as flammable liquids, assigned to packing groups by flash point and boiling point.
DocumentedTechnology & computingGeography: International — UN model regulationsPeriod: 1956–
Common questions
Is 1263 a prime number?
No, 1263 is not prime.
What are the factors of 1263?
The factors of 1263 are 1, 3, 421, 1263.
What is 1263 in Roman numerals?
1263 in Roman numerals is MCCLXIII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026