1774
1774 is the year oxygen was isolated.
- Even
- Composite
Where 1774 fits
Why 1774 is special
Priestley and Scheele identified it independently, and both interpreted it within phlogiston theory. Lavoisier understood what it was, named it, and is generally credited despite not being first.
1774 is part of
Factors & digit properties
- Divisors (4)
- 1, 2, 887, 1774
- Prime factorisation
- 2 × 887
- Digit sum
- 19
- Digital root
- 1
Representations
- Decimal
- 1774
- Scientific notation
- 1.774 × 10^3
Roman numerals
M D C C L X X I V
MDCCLXXIV uses the subtractive pair IV: one before five — five minus one.
Binary
1 1 0 1 1 1 0 1 1 1 0
1 × 1,024 + 1 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 0 × 1 = 1,774
Octal
3 3 5 6
3 × 512 + 3 × 64 + 5 × 8 + 6 × 1 = 1,774
Hexadecimal
6 e e
6 × 256 + e × 16 + e × 1 = 1,774
Read as powers of two: 1,024 + 512 + 128 + 64 + 32 + 8 + 4 + 2 = 1,774.
In historical numeral systems
Egyptian
1 lotus, 7 coils of rope, 7 hobbles, 4 strokes
1 × 1,000 + 7 × 100 + 7 × 10 + 4 × 1 = 1,774. 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), 3 corner wedges + 4 vertical wedges (units place)
29 × 60 + 34 = 1774. 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
1774 is a year in the 18th century, in the 1770s.
Cavendish showed in 1766 that burning inflammable air produced water, and oxygen was isolated in 1774. Between them, water and air stopped being elements.
View 1766 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- developed from1766
why?
Strength 0.50, confidence "high".
Science
In 1774, Joseph Priestley isolated oxygen (England).
DocumentedScienceGeography: EnglandPeriod: 1774Priestley and Scheele produced oxygen before Lavoisier and explained it as 'dephlogisticated air'. Lavoisier's contribution was recognising what it meant, which is why credit is contested and why it usually settles on him.
DocumentedSciencePeriod: 1774
Common questions
Is 1774 a prime number?
No, 1774 is not prime.
What are the factors of 1774?
The factors of 1774 are 1, 2, 887, 1774.
What is 1774 in Roman numerals?
1774 in Roman numerals is MDCCLXXIV. IV is subtractive: one before five — five minus one. Written additively it would be MDCCLXXIIII, 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