247
+247 is the international calling code for Ascension Island.
- Odd
- Composite
Where 247 fits
Why 247 is special
Ascension has no indigenous population and no right of abode: everyone there is present under a work contract. It was made habitable by a deliberate nineteenth-century afforestation.
Same number, different meanings
How 247 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Ascension has no indigenous population and no right of abode: everyone there is present under a work contract. It was made habitable by a deliberate nineteenth-century afforestation.
- Everyday life
24/7 denotes continuous availability, from twenty-four hours across seven days. The construction dates from American usage in the 1980s and spread with services that genuinely never close, such as call centres and online systems.
- Technology & computing
Continuous operation is quoted in service agreements as nines rather than as 24/7: 99.9 percent permits nearly nine hours of downtime a year, and 99.999 permits about five minutes. The slogan and the guarantee are different claims.
- Geography
+247 reaches Ascension Island, where nobody holds permanent residency rights and the cloud forest on its peak was planted deliberately from the 1840s to generate rainfall.
Factors & digit properties
- Divisors (4)
- 1, 13, 19, 247
- Prime factorisation
- 13 × 19
- Digit sum
- 13
- Digital root
- 4
Representations
- Decimal
- 247
- Binary
- 11110111
- Octal
- 367
- Hexadecimal
- f7
- Roman numeral
- CCXLVII
- Scientific notation
- 2.470 × 10^2
Other mathematical patterns
- Deficient number
- Pentagonal number
- Semiprime
- Harshad (Niven) number
Related numbers & connections
24/7 is built from twenty-four hours across seven days, and denotes availability rather than a duration.
View 24 →Other connections
Everyday life
24/7 denotes continuous availability, from twenty-four hours across seven days. The construction dates from American usage in the 1980s and spread with services that genuinely never close, such as call centres and online systems.
DocumentedEveryday lifeGeography: Originating in United States EnglishPeriod: 1980s–
Technology & computing
Continuous operation is quoted in service agreements as nines rather than as 24/7: 99.9 percent permits nearly nine hours of downtime a year, and 99.999 permits about five minutes. The slogan and the guarantee are different claims.
DocumentedTechnology & computingGeography: GlobalPeriod: 1990s–
Geography
+247 reaches Ascension Island, where nobody holds permanent residency rights and the cloud forest on its peak was planted deliberately from the 1840s to generate rainfall.
DocumentedGeographyGeography: Ascension Island
Common questions
Is 247 a prime number?
No, 247 is not prime.
What are the factors of 247?
The factors of 247 are 1, 13, 19, 247.
What is 247 in Roman numerals?
247 in Roman numerals is CCXLVII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 3 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 3 August 2026