1882
1882 is the year Koch identified the tuberculosis bacterium.
- Even
- Composite
Where 1882 fits
Why 1882 is special
He announced it on 24 March, a date still marked as World TB Day. Tuberculosis was killing about one in seven people in Europe and America at the time.
Same number, different meanings
How 1882 is understood across different contexts — never implying one meaning because of another.
- Mathematics
He announced it on 24 March, a date still marked as World TB Day. Tuberculosis was killing about one in seven people in Europe and America at the time.
- History
In 1882, Edison's Pearl Street station began supplying electricity to paying customers in Manhattan (United States).
- Science
Tuberculosis caused roughly a seventh of all deaths in Europe and North America when Koch identified its cause in 1882. Establishing that a specific organism caused a specific disease is the foundation of modern infectious medicine.
1882 is part of
Factors & digit properties
- Divisors (4)
- 1, 2, 941, 1882
- Prime factorisation
- 2 × 941
- Digit sum
- 19
- Digital root
- 1
Representations
- Decimal
- 1882
- Scientific notation
- 1.882 × 10^3
Roman numerals
M D C C C L X X X I I
Binary
1 1 1 0 1 0 1 1 0 1 0
1 × 1,024 + 1 × 512 + 1 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 1,882
Octal
3 5 3 2
3 × 512 + 5 × 64 + 3 × 8 + 2 × 1 = 1,882
Hexadecimal
7 5 a
7 × 256 + 5 × 16 + a × 1 = 1,882
Read as powers of two: 1,024 + 512 + 256 + 64 + 16 + 8 + 2 = 1,882.
In historical numeral systems
Egyptian
1 lotus, 8 coils of rope, 8 hobbles, 2 strokes
1 × 1,000 + 8 × 100 + 8 × 10 + 2 × 1 = 1,882. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
3 corner wedges + 1 vertical wedge (sixties place), 2 corner wedges + 2 vertical wedges (units place)
31 × 60 + 22 = 1882. 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
- Happy number
- Semiprime
Related numbers & connections
1882 is a year in the 19th century, in the 1880s.
Semmelweis demonstrated the effect of handwashing in 1847 without being able to explain it. Koch's identification of specific disease-causing bacteria from 1882 supplied the mechanism that had been missing.
View 1847 →History
In 1882, Edison's Pearl Street station began supplying electricity to paying customers in Manhattan (United States).
DocumentedHistoryGeography: United StatesPeriod: 1882
Science
Tuberculosis caused roughly a seventh of all deaths in Europe and North America when Koch identified its cause in 1882. Establishing that a specific organism caused a specific disease is the foundation of modern infectious medicine.
DocumentedSciencePeriod: 1882
Common questions
Is 1882 a prime number?
No, 1882 is not prime.
What are the factors of 1882?
The factors of 1882 are 1, 2, 941, 1882.
What is 1882 in Roman numerals?
1882 in Roman numerals is MDCCCLXXXII.
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