1183
1183 is a year in the 12th century. The Peace of Constance granted the Lombard cities self-government under nominal imperial authority (Italy).
- Odd
- Composite
Where 1183 fits
Why 1183 is special
1183 has a profile because of what happened in it rather than because of any property of the number: the Peace of Constance granted the Lombard cities self-government under nominal imperial authority (Italy).
1183 is part of
Factors & digit properties
- Divisors (6)
- 1, 7, 13, 91, 169, 1183
- Prime factorisation
- 7 × 13^2
- Digit sum
- 13
- Digital root
- 4
Representations
- Decimal
- 1183
- Scientific notation
- 1.183 × 10^3
Roman numerals
M C L X X X I I I
Binary
1 0 0 1 0 0 1 1 1 1 1
1 × 1,024 + 0 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 1,183
Octal
2 2 3 7
2 × 512 + 2 × 64 + 3 × 8 + 7 × 1 = 1,183
Hexadecimal
4 9 f
4 × 256 + 9 × 16 + f × 1 = 1,183
Read as powers of two: 1,024 + 128 + 16 + 8 + 4 + 2 + 1 = 1,183.
In historical numeral systems
Egyptian
1 lotus, 1 coil of rope, 8 hobbles, 3 strokes
1 × 1,000 + 1 × 100 + 8 × 10 + 3 × 1 = 1,183. 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), 4 corner wedges + 3 vertical wedges (units place)
19 × 60 + 43 = 1183. 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
- Harshad (Niven) number
- Lucky number (mathematical sieve)
Related numbers & connections
1183 is a year in the 12th century, in the 1180s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1183, the Peace of Constance granted the Lombard cities self-government under nominal imperial authority (Italy).
DocumentedHistoryGeography: ItalyPeriod: 1183
Common questions
Is 1183 a prime number?
No, 1183 is not prime.
What are the factors of 1183?
The factors of 1183 are 1, 7, 13, 91, 169, 1183.
What is 1183 in Roman numerals?
1183 in Roman numerals is MCLXXXIII.
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