150
Earth orbits about 150 million km from the Sun.
- Even
- Composite
Where 150 fits
Why 150 is special
That distance is the astronomical unit, and light takes about eight minutes and twenty seconds to cross it. Every image of the Sun shows it as it was eight minutes ago, which is the closest thing to a routine demonstration that light takes time.
Same number, different meanings
How 150 is understood across different contexts — never implying one meaning because of another.
- Mathematics
That distance is the astronomical unit, and light takes about eight minutes and twenty seconds to cross it. Every image of the Sun shows it as it was eight minutes ago, which is the closest thing to a routine demonstration that light takes time.
- Everyday life
E150 covers four classes of caramel colour produced by different processes. Class III and IV production yields 4-methylimidazole, which has attracted regulatory limits in some jurisdictions.
- Science
The Sun is roughly 150 million km away, so sunlight left it about eight minutes before reaching your eye. If the Sun ceased to exist, Earth would continue in an ordinary orbit under ordinary daylight for those eight minutes.
Factors & digit properties
- Divisors (12)
- 1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150
- Prime factorisation
- 2 × 3 × 5^2
- Digit sum
- 6
- Digital root
- 6
Representations
- Decimal
- 150
- Binary
- 10010110
- Octal
- 226
- Hexadecimal
- 96
- Roman numeral
- CL
- Scientific notation
- 1.500 × 10^2
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
Mars orbits at about 228 million km against Earth's 150. Because both move, the distance between them ranges from about 55 to 400 million km, which is why launch windows open only every 26 months.
View 228 →The Sun is about 390 times further away than the Moon and about 400 times wider, which is why the two appear almost the same size and why total eclipses work.
View 384400 →Everyday life
E150 covers four classes of caramel colour produced by different processes. Class III and IV production yields 4-methylimidazole, which has attracted regulatory limits in some jurisdictions.
DocumentedEveryday lifeGeography: European Union and states adopting the E number systemPeriod: 1962–
Science
The Sun is roughly 150 million km away, so sunlight left it about eight minutes before reaching your eye. If the Sun ceased to exist, Earth would continue in an ordinary orbit under ordinary daylight for those eight minutes.
DocumentedScience
Common questions
Is 150 a prime number?
No, 150 is not prime.
What are the factors of 150?
The factors of 150 are 1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150.
What is 150 in Roman numerals?
150 in Roman numerals is CL.
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