1071
1071 is the year of the Battle of Manzikert.
- Odd
- Composite
Where 1071 fits
Why 1071 is special
The Byzantine defeat opened Anatolia to Turkish settlement and set in train the appeal to the west that produced the Crusades. It is among the most consequential single battles in European history.
Factors & digit properties
- Divisors (12)
- 1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071
- Prime factorisation
- 3^2 × 7 × 17
- Digit sum
- 9
- Digital root
- 9
Representations
- Decimal
- 1071
- Binary
- 10000101111
- Octal
- 2057
- Hexadecimal
- 42f
- Roman numeral
- MLXXI
- Scientific notation
- 1.071 × 10^3
Other mathematical patterns
- Deficient number
- Harshad (Niven) number
Related numbers & connections
Manzikert in 1071 cost Byzantium Anatolia, and the appeal for western help that followed produced the First Crusade in 1095.
View 1095 →Other connections
- developed from1095
why?
Strength 0.50, confidence "high".
History
Manzikert in 1071 cost Byzantium control of Anatolia and led directly to the imperial appeal for western help that Urban II answered in 1095.
DocumentedHistoryGeography: AnatoliaPeriod: 1071
Common questions
Is 1071 a prime number?
No, 1071 is not prime.
What are the factors of 1071?
The factors of 1071 are 1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071.
What is 1071 in Roman numerals?
1071 in Roman numerals is MLXXI.
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