1887
1887 is the year of the Michelson-Morley experiment.
- Odd
- Composite
Where 1887 fits
Why 1887 is special
It looked for the ether through which light was assumed to travel and found nothing. A famous null result, and the failure is what cleared the way for special relativity eighteen years later.
Factors & digit properties
- Divisors (8)
- 1, 3, 17, 37, 51, 111, 629, 1887
- Prime factorisation
- 3 × 17 × 37
- Digit sum
- 24
- Digital root
- 6
Representations
- Decimal
- 1887
- Binary
- 11101011111
- Octal
- 3537
- Hexadecimal
- 75f
- Roman numeral
- MDCCCLXXXVII
- Scientific notation
- 1.887 × 10^3
Other mathematical patterns
- Deficient number
Related numbers & connections
The Michelson-Morley experiment of 1887 found no ether, and general relativity in 1916 explained why there was nothing to find.
View 1916 →Science
Michelson and Morley found no evidence of the ether they were measuring. The null result was treated as a failed experiment at the time and is now the standard example of a negative finding reshaping a field.
DocumentedSciencePeriod: 1887
Common questions
Is 1887 a prime number?
No, 1887 is not prime.
What are the factors of 1887?
The factors of 1887 are 1, 3, 17, 37, 51, 111, 629, 1887.
What is 1887 in Roman numerals?
1887 in Roman numerals is MDCCCLXXXVII.
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