1347
1347 is the year the Black Death reached Europe.
- Odd
- Composite
Where 1347 fits
Why 1347 is special
It arrived at Sicilian ports in October 1347 and killed perhaps a third to a half of Europe's population within five years. The resulting labour shortage raised wages and weakened serfdom, which is why the pandemic appears in economic history as well as medical history.
Factors & digit properties
- Divisors (4)
- 1, 3, 449, 1347
- Prime factorisation
- 3 × 449
- Digit sum
- 15
- Digital root
- 6
Representations
- Decimal
- 1347
- Binary
- 10101000011
- Octal
- 2503
- Hexadecimal
- 543
- Roman numeral
- MCCCXLVII
- Scientific notation
- 1.347 × 10^3
Other mathematical patterns
- Deficient number
- Semiprime
Related numbers & connections
Two plague outbreaks 300 years apart. The fourteenth-century pandemic killed a third to a half of Europe; the seventeenth-century London outbreak was a local recurrence of the same disease.
View 1665 →History
Plague reached Sicilian ports in 1347 and killed perhaps a third to a half of Europe's population within five years. The shortage of labour that followed raised wages and weakened serfdom, which is why the pandemic belongs to economic history as much as to medical history.
DocumentedHistoryGeography: EuropePeriod: 1347–1352
Common questions
Is 1347 a prime number?
No, 1347 is not prime.
What are the factors of 1347?
The factors of 1347 are 1, 3, 449, 1347.
What is 1347 in Roman numerals?
1347 in Roman numerals is MCCCXLVII.
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