1085
1085 is the year the Domesday survey was commissioned.
- Odd
- Composite
Why 1085 is special
It recorded landholding across England in a single year with a thoroughness contemporaries found alarming. The name reflects that there was no appeal against its findings.
Factors & digit properties
- Divisors (8)
- 1, 5, 7, 31, 35, 155, 217, 1085
- Prime factorisation
- 5 × 7 × 31
- Digit sum
- 14
- Digital root
- 5
Representations
- Decimal
- 1085
- Binary
- 10000111101
- Octal
- 2075
- Hexadecimal
- 43d
- Roman numeral
- MLXXXV
- Scientific notation
- 1.085 × 10^3
Other mathematical patterns
- Deficient number
Law & regulation
The Domesday Book was called that because its verdicts were final, like the Last Judgement. It remains a usable legal record and has been cited in modern property disputes.
DocumentedLaw & regulationGeography: EnglandPeriod: 1085–1086
Common questions
Is 1085 a prime number?
No, 1085 is not prime.
What are the factors of 1085?
The factors of 1085 are 1, 5, 7, 31, 35, 155, 217, 1085.
What is 1085 in Roman numerals?
1085 in Roman numerals is MLXXXV.
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: 3 August 2026