1780
1780 is the year of the Gordon Riots in London.
- Even
- Composite
Where 1780 fits
Why 1780 is special
Anti-Catholic protest became the most destructive rioting London has seen, with several hundred killed. It is a standard case study in how quickly organised protest can lose its organisers.
Factors & digit properties
- Divisors (12)
- 1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780
- Prime factorisation
- 2^2 × 5 × 89
- Digit sum
- 16
- Digital root
- 7
Representations
- Decimal
- 1780
- Binary
- 11011110100
- Octal
- 3364
- Hexadecimal
- 6f4
- Roman numeral
- MDCCLXXX
- Scientific notation
- 1.780 × 10^3
Other mathematical patterns
- Abundant number
Related numbers & connections
The Gordon Riots of 1780 were protest that outran its organisers; Peterloo in 1819 was a peaceful meeting charged by cavalry. The state's response differed from the disorder in both cases.
View 1819 →Other connections
- contrasts with1819
why?
Strength 0.50, confidence "high".
History
The Gordon Riots began as an organised anti-Catholic petition and became a week of destruction that its nominal leader could not stop. Casualty figures exceed any other London disorder.
DocumentedHistoryGeography: London, EnglandPeriod: 1780
Common questions
Is 1780 a prime number?
No, 1780 is not prime.
What are the factors of 1780?
The factors of 1780 are 1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780.
What is 1780 in Roman numerals?
1780 in Roman numerals is MDCCLXXX.
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