1340
1340 is the year of the Battle of Sluys.
- Even
- Composite
Where 1340 fits
Why 1340 is special
An English naval victory gave control of the Channel early in the Hundred Years' War. Nobody dared tell the French king the result; his jester reportedly did it obliquely.
Factors & digit properties
- Divisors (12)
- 1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340
- Prime factorisation
- 2^2 × 5 × 67
- Digit sum
- 8
- Digital root
- 8
Representations
- Decimal
- 1340
- Binary
- 10100111100
- Octal
- 2474
- Hexadecimal
- 53c
- Roman numeral
- MCCCXL
- Scientific notation
- 1.340 × 10^3
Other mathematical patterns
- Abundant number
Related numbers & connections
Sluys in 1340 gave England control of the Channel and La Rochelle in 1372 took it away, which is roughly how often it changed hands through the Hundred Years' War.
View 1372 →History
Sluys in 1340 destroyed the French fleet and gave England control of the Channel for years, which is why the war was fought almost entirely in France.
DocumentedHistoryGeography: FlandersPeriod: 1340
Common questions
Is 1340 a prime number?
No, 1340 is not prime.
What are the factors of 1340?
The factors of 1340 are 1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340.
What is 1340 in Roman numerals?
1340 in Roman numerals is MCCCXL.
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