1749
1749 is the year Buffon began publishing his natural history.
- Odd
- Composite
Where 1749 fits
Why 1749 is special
It ran to 36 volumes, proposed an Earth far older than biblical chronology allowed, and suggested species change over time. Darwin acknowledged him as a predecessor.
1749 connects to:
- historical years — appears in
- 1686 — contrasts with
Same number, different meanings
How 1749 is understood across different contexts — never implying one meaning because of another.
- Mathematics
It ran to 36 volumes, proposed an Earth far older than biblical chronology allowed, and suggested species change over time. Darwin acknowledged him as a predecessor.
- History
In 1749, Buffon began his Histoire Naturelle, which questioned a young Earth on physical grounds (France).
- Science
Buffon estimated the Earth's age at tens of thousands of years from cooling experiments, against a biblical chronology of about six thousand. He also raised species change, a century before Darwin.
1749 is part of
Factors & digit properties
- Divisors (8)
- 1, 3, 11, 33, 53, 159, 583, 1749
- Prime factorisation
- 3 × 11 × 53
- Digit sum
- 21
- Digital root
- 3
Representations
- Decimal
- 1749
- Scientific notation
- 1.749 × 10^3
Roman numerals
M D C C X L I X
MDCCXLIX uses the subtractive pair IX: one before ten — ten minus one.
Binary
1 1 0 1 1 0 1 0 1 0 1
1 × 1,024 + 1 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 1 × 1 = 1,749
Octal
3 3 2 5
3 × 512 + 3 × 64 + 2 × 8 + 5 × 1 = 1,749
Hexadecimal
6 d 5
6 × 256 + d × 16 + 5 × 1 = 1,749
Read as powers of two: 1,024 + 512 + 128 + 64 + 16 + 4 + 1 = 1,749.
In historical numeral systems
Egyptian
1 lotus, 7 coils of rope, 4 hobbles, 9 strokes
1 × 1,000 + 7 × 100 + 4 × 10 + 9 × 1 = 1,749. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 9 vertical wedges (sixties place), 9 vertical wedges (units place)
29 × 60 + 9 = 1749. 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
- Lucky number (mathematical sieve)
Related numbers & connections
1749 is a year in the 18th century, in the 1740s.
A fossil bone described in 1686 was read as a giant human's because extinction was not a available concept. Buffon's natural history from 1749 proposed an Earth old enough for species to change.
View 1686 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- contrasts with1686
why?
Strength 0.50, confidence "high".
History
In 1749, Buffon began his Histoire Naturelle, which questioned a young Earth on physical grounds (France).
DocumentedHistoryGeography: FrancePeriod: 1749
Science
Buffon estimated the Earth's age at tens of thousands of years from cooling experiments, against a biblical chronology of about six thousand. He also raised species change, a century before Darwin.
DocumentedScienceGeography: FrancePeriod: 1749
Common questions
Is 1749 a prime number?
No, 1749 is not prime.
What are the factors of 1749?
The factors of 1749 are 1, 3, 11, 33, 53, 159, 583, 1749.
What is 1749 in Roman numerals?
1749 in Roman numerals is MDCCXLIX. IX is subtractive: one before ten — ten minus one. Written additively it would be MDCCXXXXVIIII, 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