1797
1797 is the year the first parachute descent was made.
- Odd
- Composite
Where 1797 fits
Why 1797 is special
André-Jacques Garnerin jumped from a balloon over Paris. The canopy oscillated violently on the way down, and the vent hole added afterwards to fix it is still standard.
Same number, different meanings
How 1797 is understood across different contexts — never implying one meaning because of another.
- Mathematics
André-Jacques Garnerin jumped from a balloon over Paris. The canopy oscillated violently on the way down, and the vent hole added afterwards to fix it is still standard.
- History
In 1797, the first recorded parachute descent was made from a balloon over Paris by André-Jacques Garnerin (France).
- Technology & computing
Garnerin's 1797 descent swung so violently that a vent was cut in later canopies to let air escape. That modification remains a feature of round parachutes more than two centuries later.
1797 is part of
Factors & digit properties
- Divisors (4)
- 1, 3, 599, 1797
- Prime factorisation
- 3 × 599
- Digit sum
- 24
- Digital root
- 6
Representations
- Decimal
- 1797
- Scientific notation
- 1.797 × 10^3
Roman numerals
M D C C X C V I I
MDCCXCVII uses the subtractive pair XC: ten before a hundred — a hundred minus ten.
Binary
1 1 1 0 0 0 0 0 1 0 1
1 × 1,024 + 1 × 512 + 1 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 1 × 1 = 1,797
Octal
3 4 0 5
3 × 512 + 4 × 64 + 0 × 8 + 5 × 1 = 1,797
Hexadecimal
7 0 5
7 × 256 + 0 × 16 + 5 × 1 = 1,797
Read as powers of two: 1,024 + 512 + 256 + 4 + 1 = 1,797.
In historical numeral systems
Egyptian
1 lotus, 7 coils of rope, 9 hobbles, 7 strokes
1 × 1,000 + 7 × 100 + 9 × 10 + 7 × 1 = 1,797. 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), 5 corner wedges + 7 vertical wedges (units place)
29 × 60 + 57 = 1797. 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
- Lucky number (mathematical sieve)
Related numbers & connections
1797 is a year in the 18th century, in the 1790s.
The first parachute descent in 1797 followed the first manned balloon flights of the 1780s. The parachute existed as an answer to a problem ballooning had created.
View 1783 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- developed from1783
why?
Strength 0.50, confidence "high".
History
In 1797, the first recorded parachute descent was made from a balloon over Paris by André-Jacques Garnerin (France).
DocumentedHistoryGeography: FrancePeriod: 1797
Technology & computing
Garnerin's 1797 descent swung so violently that a vent was cut in later canopies to let air escape. That modification remains a feature of round parachutes more than two centuries later.
DocumentedTechnology & computingGeography: FrancePeriod: 1797
Common questions
Is 1797 a prime number?
No, 1797 is not prime.
What are the factors of 1797?
The factors of 1797 are 1, 3, 599, 1797.
What is 1797 in Roman numerals?
1797 in Roman numerals is MDCCXCVII. XC is subtractive: ten before a hundred — a hundred minus ten. Written additively it would be MDCCLXXXXVII, 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