1807
1807 is the year Britain abolished the transatlantic slave trade.
- Odd
- Composite
Where 1807 fits
Why 1807 is special
The Act banned trading, not slavery itself, which continued in British colonies until 1833. The Royal Navy then spent decades intercepting slave ships, having spent the previous century protecting them.
Same number, different meanings
How 1807 is understood across different contexts — never implying one meaning because of another.
- Mathematics
The Act banned trading, not slavery itself, which continued in British colonies until 1833. The Royal Navy then spent decades intercepting slave ships, having spent the previous century protecting them.
- History
In 1807, the Slave Trade Act abolished the Atlantic slave trade in the British Empire (British Empire).
- Law & regulation
The 1807 Act made trading in enslaved people illegal and left slavery itself lawful in British colonies for another 26 years. Conflating the two dates is the most common error made about British abolition.
1807 is part of
Factors & digit properties
- Divisors (4)
- 1, 13, 139, 1807
- Prime factorisation
- 13 × 139
- Digit sum
- 16
- Digital root
- 7
Representations
- Decimal
- 1807
- Scientific notation
- 1.807 × 10^3
Roman numerals
M D C C C V I I
Binary
1 1 1 0 0 0 0 1 1 1 1
1 × 1,024 + 1 × 512 + 1 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 1,807
Octal
3 4 1 7
3 × 512 + 4 × 64 + 1 × 8 + 7 × 1 = 1,807
Hexadecimal
7 0 f
7 × 256 + 0 × 16 + f × 1 = 1,807
Read as powers of two: 1,024 + 512 + 256 + 8 + 4 + 2 + 1 = 1,807.
In historical numeral systems
Egyptian
1 lotus, 8 coils of rope, 7 strokes
1 × 1,000 + 8 × 100 + 7 × 1 = 1,807. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
3 corner wedges (sixties place), 7 vertical wedges (units place)
30 × 60 + 7 = 1807. Places are separated by a space on the tablet, with the higher place written first.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Deficient number
- Semiprime
Related numbers & connections
1807 is a year in the 19th century, in the 1800s.
Britain banned the slave trade in 1807 and abolished slavery itself in 1833. Twenty-six years separate the two, and conflating them is the most common error made about British abolition.
View 1833 →History
In 1807, the Slave Trade Act abolished the Atlantic slave trade in the British Empire (British Empire).
DocumentedHistoryGeography: British EmpirePeriod: 1807
Law & regulation
The 1807 Act made trading in enslaved people illegal and left slavery itself lawful in British colonies for another 26 years. Conflating the two dates is the most common error made about British abolition.
DocumentedLaw & regulationGeography: British EmpirePeriod: 1807
Common questions
Is 1807 a prime number?
No, 1807 is not prime.
What are the factors of 1807?
The factors of 1807 are 1, 13, 139, 1807.
What is 1807 in Roman numerals?
1807 in Roman numerals is MDCCCVII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026