5,000
5,000 metres is the standard long-distance track event — twelve and a half laps.
- Even
- Composite
Where 5,000 fits
Why 5,000 is special
The 5000 sits at the boundary of track and distance running. Twelve and a half laps means the race starts on the back straight rather than the usual start line, and it is short enough to be run at close to threshold pace yet long enough that tactics decide most championship finals. It replaced the older three-mile event as athletics standardised on metric distances.
Same number, different meanings
How 5,000 is understood across different contexts — never implying one meaning because of another.
- Mathematics
The 5000 sits at the boundary of track and distance running. Twelve and a half laps means the race starts on the back straight rather than the usual start line, and it is short enough to be run at close to threshold pace yet long enough that tactics decide most championship finals. It replaced the older three-mile event as athletics standardised on metric distances.
- Technology & computing
Flask and macOS AirPlay both claim port 5000 by default, so running a Python development server on a Mac often fails with the port in use. Neither project changed, and the workaround is to pick a different port.
- Sport
Twelve and a half laps of a 400 m track means the 5000 begins on the back straight rather than the usual start line — the half lap has to go somewhere. It replaced the three-mile event as athletics converted to metric distances, and remains short enough to run near threshold pace yet long enough for tactics to decide most finals.
Factors & digit properties
- Divisors (20)
- 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000
- Prime factorisation
- 2^3 × 5^4
- Digit sum
- 5
- Digital root
- 5
Representations
- Decimal
- 5000
- Binary
- 1001110001000
- Octal
- 11610
- Hexadecimal
- 1388
- Scientific notation
- 5.000 × 10^3
Other mathematical patterns
- Abundant number
- Powerful number
- Harshad (Niven) number
Related numbers & connections
The step from middle to long distance. The 1500 is three and three-quarter laps and the 5000 twelve and a half, so both start away from the conventional start line — a small consequence of imposing round metric distances on a 400-metre oval.
View 1500 →Numbers Around Us
- appears alongside1500
why?
Strength 0.50, confidence "high".
Technology & computing
Flask and macOS AirPlay both claim port 5000 by default, so running a Python development server on a Mac often fails with the port in use. Neither project changed, and the workaround is to pick a different port.
DocumentedTechnology & computing
Sport
Twelve and a half laps of a 400 m track means the 5000 begins on the back straight rather than the usual start line — the half lap has to go somewhere. It replaced the three-mile event as athletics converted to metric distances, and remains short enough to run near threshold pace yet long enough for tactics to decide most finals.
DocumentedSport
Common questions
Is 5,000 a prime number?
No, 5,000 is not prime.
What are the factors of 5,000?
The factors of 5,000 are 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000.
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: 3 August 2026