1100
1100 is the year of the Charter of Liberties.
- Even
- Composite
Where 1100 fits
Why 1100 is special
Henry I issued a written promise limiting royal power over the church and nobility. Magna Carta 115 years later was explicitly modelled on it, which makes 1215 less of a novelty than usually presented.
Same number, different meanings
How 1100 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Henry I issued a written promise limiting royal power over the church and nobility. Magna Carta 115 years later was explicitly modelled on it, which makes 1215 less of a novelty than usually presented.
- History
In 1100, Henry I issued the Charter of Liberties, a written limit on royal power that Magna Carta later drew on (England).
- Technology & computing
1100 is commercially pure aluminium, at least 99 percent, with low strength and excellent formability and conductivity. It is used for chemical equipment, heat exchangers and foil.
- Law & regulation
The 1100 Charter of Liberties bound the king by written undertaking. Magna Carta's drafters used it as a template, so the constitutional tradition usually dated to 1215 has an earlier and largely forgotten precedent.
1100 is part of
Factors & digit properties
- Divisors (18)
- 1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100
- Prime factorisation
- 2^2 × 5^2 × 11
- Digit sum
- 2
- Digital root
- 2
Representations
- Decimal
- 1100
- Scientific notation
- 1.100 × 10^3
Roman numerals
M C
Binary
1 0 0 0 1 0 0 1 1 0 0
1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 1,100
Octal
2 1 1 4
2 × 512 + 1 × 64 + 1 × 8 + 4 × 1 = 1,100
Hexadecimal
4 4 c
4 × 256 + 4 × 16 + c × 1 = 1,100
Read as powers of two: 1,024 + 64 + 8 + 4 = 1,100.
In historical numeral systems
Egyptian
1 lotus, 1 coil of rope
1 × 1,000 + 1 × 100 = 1,100. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 8 vertical wedges (sixties place), 2 corner wedges (units place)
18 × 60 + 20 = 1100. 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
- Abundant number
- Harshad (Niven) number
Related numbers & connections
1100 is a year in the 11th century, in the 1100s.
Manganese raises strength slightly over commercially pure aluminium while keeping the formability that matters.
View 3003 →History
In 1100, Henry I issued the Charter of Liberties, a written limit on royal power that Magna Carta later drew on (England).
DocumentedHistoryGeography: EnglandPeriod: 1100
Technology & computing
1100 is commercially pure aluminium, at least 99 percent, with low strength and excellent formability and conductivity. It is used for chemical equipment, heat exchangers and foil.
DocumentedTechnology & computingGeography: International — Aluminium Association designations
Law & regulation
The 1100 Charter of Liberties bound the king by written undertaking. Magna Carta's drafters used it as a template, so the constitutional tradition usually dated to 1215 has an earlier and largely forgotten precedent.
DocumentedLaw & regulationGeography: EnglandPeriod: 1100
Common questions
Is 1100 a prime number?
No, 1100 is not prime.
What are the factors of 1100?
The factors of 1100 are 1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100.
What is 1100 in Roman numerals?
1100 in Roman numerals is MC.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 3 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026