1719
1719 is the year Robinson Crusoe was published.
- Odd
- Composite
Where 1719 fits
Why 1719 is special
Often called the first English novel, it was presented as a true account and many readers took it as one. The publishing convention of the found manuscript starts around here.
Same number, different meanings
How 1719 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Often called the first English novel, it was presented as a true account and many readers took it as one. The publishing convention of the found manuscript starts around here.
- History
In 1719, Daniel Defoe published Robinson Crusoe (England).
- Culture
Robinson Crusoe appeared in 1719 without Defoe's name, framed as an authentic memoir. Whether it is the first English novel depends entirely on the definition used.
1719 is part of
Factors & digit properties
- Divisors (6)
- 1, 3, 9, 191, 573, 1719
- Prime factorisation
- 3^2 × 191
- Digit sum
- 18
- Digital root
- 9
Representations
- Decimal
- 1719
- Scientific notation
- 1.719 × 10^3
Roman numerals
M D C C X I X
MDCCXIX uses the subtractive pair IX: one before ten — ten minus one.
Binary
1 1 0 1 0 1 1 0 1 1 1
1 × 1,024 + 1 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 0 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 1,719
Octal
3 2 6 7
3 × 512 + 2 × 64 + 6 × 8 + 7 × 1 = 1,719
Hexadecimal
6 b 7
6 × 256 + b × 16 + 7 × 1 = 1,719
Read as powers of two: 1,024 + 512 + 128 + 32 + 16 + 4 + 2 + 1 = 1,719.
In historical numeral systems
Egyptian
1 lotus, 7 coils of rope, 1 hobble, 9 strokes
1 × 1,000 + 7 × 100 + 1 × 10 + 9 × 1 = 1,719. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 8 vertical wedges (sixties place), 3 corner wedges + 9 vertical wedges (units place)
28 × 60 + 39 = 1719. 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
Related numbers & connections
1719 is a year in the 18th century, in the 1710s.
Robinson Crusoe in 1719 and Gulliver's Travels in 1726 were both published as authentic accounts. Both are now read as fiction and one is read as a children's story.
View 1726 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- developed from1726
why?
Strength 0.50, confidence "high".
History
In 1719, Daniel Defoe published Robinson Crusoe (England).
DocumentedHistoryGeography: EnglandPeriod: 1719
Culture
Robinson Crusoe appeared in 1719 without Defoe's name, framed as an authentic memoir. Whether it is the first English novel depends entirely on the definition used.
DocumentedCultureGeography: EnglandPeriod: 1719
Common questions
Is 1719 a prime number?
No, 1719 is not prime.
What are the factors of 1719?
The factors of 1719 are 1, 3, 9, 191, 573, 1719.
What is 1719 in Roman numerals?
1719 in Roman numerals is MDCCXIX. IX is subtractive: one before ten — ten minus one. Written additively it would be MDCCXVIIII, 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