1441
1441 is the year the Atlantic slave trade began in Portugal.
- Odd
- Composite
Where 1441 fits
Why 1441 is special
The first cargo of enslaved Africans was landed at Lagos in Portugal, beginning a trade that ran for over four centuries.
1441 is part of
Factors & digit properties
- Divisors (4)
- 1, 11, 131, 1441
- Prime factorisation
- 11 × 131
- Digit sum
- 10
- Digital root
- 1
Representations
- Decimal
- 1441
- Scientific notation
- 1.441 × 10^3
Roman numerals
M C D X L I
MCDXLI uses the subtractive pair XL: ten before fifty — fifty minus ten.
Binary
1 0 1 1 0 1 0 0 0 0 1
1 × 1,024 + 0 × 512 + 1 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 1,441
Octal
2 6 4 1
2 × 512 + 6 × 64 + 4 × 8 + 1 × 1 = 1,441
Hexadecimal
5 a 1
5 × 256 + a × 16 + 1 × 1 = 1,441
Read as powers of two: 1,024 + 256 + 128 + 32 + 1 = 1,441.
In historical numeral systems
Egyptian
1 lotus, 4 coils of rope, 4 hobbles, 1 stroke
1 × 1,000 + 4 × 100 + 4 × 10 + 1 × 1 = 1,441. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 4 vertical wedges (sixties place), 1 vertical wedge (units place)
24 × 60 + 1 = 1441. 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
- Palindromic number
- Deficient number
- Semiprime
- Lucky number (mathematical sieve)
Related numbers & connections
1441 is a year in the 15th century, in the 1440s.
Portugal landed the first enslaved Africans in Europe in 1441, and da Gama's 1498 sea route to India extended the same maritime enterprise eastward.
View 1498 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- developed from1498
why?
Strength 0.50, confidence "high".
History
In 1441, the first African captives were brought to Portugal by sea, beginning the Atlantic slave trade (West Africa and Portugal).
DocumentedHistoryGeography: West Africa and PortugalPeriod: 1441Portuguese ships landed the first enslaved Africans in Europe in 1441, opening the Atlantic trade. It continued in some form until the 1860s.
DocumentedHistoryGeography: Portugal and West AfricaPeriod: 1441
Common questions
Is 1441 a prime number?
No, 1441 is not prime.
What are the factors of 1441?
The factors of 1441 are 1, 11, 131, 1441.
What is 1441 in Roman numerals?
1441 in Roman numerals is MCDXLI. XL is subtractive: ten before fifty — fifty minus ten. Written additively it would be MCCCCXXXXI, which Roman inscriptions used freely — the strict subtractive form is a later convention.
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