1881
1881 is the year the first electric power station opened.
- Odd
- Composite
Where 1881 fits
Why 1881 is special
Godalming in Surrey was lit by a water-powered generator, a year before Edison's more famous stations in London and New York.
Same number, different meanings
How 1881 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Godalming in Surrey was lit by a water-powered generator, a year before Edison's more famous stations in London and New York.
- Science
In 1881, the Michelson experiment found no sign of the ether, a null result that later underpinned relativity (Prussia).
- Technology & computing
Godalming had public electric lighting from a waterwheel-driven generator in 1881, predating Edison's Holborn and Pearl Street stations. Firsts in electrification are frequently misattributed to larger places.
Factors & digit properties
- Divisors (12)
- 1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881
- Prime factorisation
- 3^2 × 11 × 19
- Digit sum
- 18
- Digital root
- 9
Representations
- Decimal
- 1881
- Scientific notation
- 1.881 × 10^3
Roman numerals
M D C C C L X X X I
Binary
1 1 1 0 1 0 1 1 0 0 1
1 × 1,024 + 1 × 512 + 1 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 1,881
Octal
3 5 3 1
3 × 512 + 5 × 64 + 3 × 8 + 1 × 1 = 1,881
Hexadecimal
7 5 9
7 × 256 + 5 × 16 + 9 × 1 = 1,881
Read as powers of two: 1,024 + 512 + 256 + 64 + 16 + 8 + 1 = 1,881.
In historical numeral systems
Egyptian
1 lotus, 8 coils of rope, 8 hobbles, 1 stroke
1 × 1,000 + 8 × 100 + 8 × 10 + 1 × 1 = 1,881. 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 + 1 vertical wedge (units place)
31 × 60 + 21 = 1881. 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
- Palindromic number
- Deficient number
- Happy number
Related numbers & connections
1881 is a year in the 19th century, in the 1880s.
Godalming had public electric lighting from a waterwheel in 1881, two years after Edison's demonstration and before his more famous stations.
View 1879 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- developed from1879
why?
Strength 0.50, confidence "high".
Science
In 1881, the Michelson experiment found no sign of the ether, a null result that later underpinned relativity (Prussia).
DocumentedScienceGeography: PrussiaPeriod: 1881
Technology & computing
Godalming had public electric lighting from a waterwheel-driven generator in 1881, predating Edison's Holborn and Pearl Street stations. Firsts in electrification are frequently misattributed to larger places.
DocumentedTechnology & computingGeography: EnglandPeriod: 1881
Common questions
Is 1881 a prime number?
No, 1881 is not prime.
What are the factors of 1881?
The factors of 1881 are 1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 627, 1881.
What is 1881 in Roman numerals?
1881 in Roman numerals is MDCCCLXXXI.
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