1166
1166 is a year in the 12th century. The Assize of Clarendon established juries of presentment, an ancestor of the grand jury (England).
- Even
- Composite
Where 1166 fits
Why 1166 is special
1166 has a profile because of what happened in it rather than because of any property of the number: the Assize of Clarendon established juries of presentment, an ancestor of the grand jury (England).
1166 is part of
Factors & digit properties
- Divisors (8)
- 1, 2, 11, 22, 53, 106, 583, 1166
- Prime factorisation
- 2 × 11 × 53
- Digit sum
- 14
- Digital root
- 5
Representations
- Decimal
- 1166
- Scientific notation
- 1.166 × 10^3
Roman numerals
M C L X V I
Binary
1 0 0 1 0 0 0 1 1 1 0
1 × 1,024 + 0 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 0 × 1 = 1,166
Octal
2 2 1 6
2 × 512 + 2 × 64 + 1 × 8 + 6 × 1 = 1,166
Hexadecimal
4 8 e
4 × 256 + 8 × 16 + e × 1 = 1,166
Read as powers of two: 1,024 + 128 + 8 + 4 + 2 = 1,166.
In historical numeral systems
Egyptian
1 lotus, 1 coil of rope, 6 hobbles, 6 strokes
1 × 1,000 + 1 × 100 + 6 × 10 + 6 × 1 = 1,166. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 9 vertical wedges (sixties place), 2 corner wedges + 6 vertical wedges (units place)
19 × 60 + 26 = 1166. 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
Related numbers & connections
1166 is a year in the 12th century, in the 1160s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1166, the Assize of Clarendon established juries of presentment, an ancestor of the grand jury (England).
DocumentedHistoryGeography: EnglandPeriod: 1166
Common questions
Is 1166 a prime number?
No, 1166 is not prime.
What are the factors of 1166?
The factors of 1166 are 1, 2, 11, 22, 53, 106, 583, 1166.
What is 1166 in Roman numerals?
1166 in Roman numerals is MCLXVI.
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