2017
2017 is the year gravitational waves from a neutron star merger were observed with light.
- Odd
- Prime
Where 2017 fits
Why 2017 is special
For the first time an event was detected in both gravitational waves and the electromagnetic spectrum, confirming that such mergers produce heavy elements including gold.
2017 is part of
Factors & digit properties
- Divisors (2)
- 1, 2017
- Prime factorisation
- 2017
- Digit sum
- 10
- Digital root
- 1
Representations
- Decimal
- 2017
- Binary
- 11111100001
- Octal
- 3741
- Hexadecimal
- 7e1
- Roman numeral
- MMXVII
- Scientific notation
- 2.017 × 10^3
Other mathematical patterns
- Deficient number
Related numbers & connections
Gravitational waves and light from the same 2017 neutron star merger, then the first black hole image in 2019. Both are cases of combining instruments to observe what one alone could not.
View 2019 →Science
A 2017 neutron star merger was detected as gravitational waves and then observed by telescopes worldwide. It confirmed that such collisions forge heavy elements, which means the gold in circulation was made this way.
DocumentedSciencePeriod: 2017
Common questions
Is 2017 a prime number?
Yes, 2017 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 2017?
The factors of 2017 are 1, 2017.
What is 2017 in Roman numerals?
2017 in Roman numerals is MMXVII.
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