1843
1843 is the year Ada Lovelace published the first algorithm intended for a machine.
- Odd
- Composite
Where 1843 fits
Why 1843 is special
Her notes on Babbage's Analytical Engine, longer than the paper she was translating, describe how it could compute Bernoulli numbers and speculate that machines might manipulate symbols beyond numbers.
Factors & digit properties
- Divisors (4)
- 1, 19, 97, 1843
- Prime factorisation
- 19 × 97
- Digit sum
- 16
- Digital root
- 7
Representations
- Decimal
- 1843
- Binary
- 11100110011
- Octal
- 3463
- Hexadecimal
- 733
- Roman numeral
- MDCCCXLIII
- Scientific notation
- 1.843 × 10^3
Other mathematical patterns
- Deficient number
- Semiprime
Related numbers & connections
Ada Lovelace described an algorithm for a machine in 1843 and Turing defined what a machine could compute in 1936. Both preceded any working computer.
View 1936 →Other connections
- developed from1936
why?
Strength 0.50, confidence "high".
Technology & computing
Lovelace's 1843 notes set out a step-by-step method for the Analytical Engine to compute Bernoulli numbers. The machine was never completed, so the first program predates the first computer by a century.
DocumentedTechnology & computingGeography: EnglandPeriod: 1843
Common questions
Is 1843 a prime number?
No, 1843 is not prime.
What are the factors of 1843?
The factors of 1843 are 1, 19, 97, 1843.
What is 1843 in Roman numerals?
1843 in Roman numerals is MDCCCXLIII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026