300
300 is the HTTP status code Multiple Choices — several representations exist and the client should pick.
- Even
- Composite
Where 300 fits
Why 300 is special
300 is the redirect nobody uses. It was designed for content negotiation, offering a client alternative formats or languages to choose between, but in practice servers decide for you and answer with the chosen representation directly. It survives in the specification more as a design record than as working infrastructure.
Same number, different meanings
How 300 is understood across different contexts — never implying one meaning because of another.
- Mathematics
300 is the redirect nobody uses. It was designed for content negotiation, offering a client alternative formats or languages to choose between, but in practice servers decide for you and answer with the chosen representation directly. It survives in the specification more as a design record than as working infrastructure.
- History
Thermopylae is remembered as 300 Spartans, and roughly 7,000 Greeks held the pass for the first two days. About 1,100 Thespians and Thebans stayed for the final stand alongside the Spartans. The figure 300 is accurate about one contingent and misleading about the battle.
- Technology & computing
There are roughly 300 billion emails sent each day. Industry estimates, not a measured total. A large majority is automated or unsolicited, so the figure describes traffic rather than correspondence.
- Science
The speed of light in a vacuum is very nearly 300 thousand kilometres per second. Exactly 299,792,458 metres per second, with no measurement error at all — since 1983 the metre has been defined from it, so measuring it more precisely now refines the metre rather than the speed.
- Finance & economics
There are about 300 trillion US dollars of global debt (worldwide, government, household and corporate combined). Figure as of 2023. Roughly three times annual world output, which is the comparison that makes the figure mean something.
- Sport
Twelve consecutive strikes score 300 in ten-pin bowling — twelve rather than ten because the final frame grants two extra deliveries. It is the maximum possible score, and unlike most perfect performances it is common enough that leagues record hundreds each year.
300 is part of
Factors & digit properties
- Divisors (18)
- 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 300
- Prime factorisation
- 2^2 × 3 × 5^2
- Digit sum
- 3
- Digital root
- 3
Representations
- Decimal
- 300
- Scientific notation
- 3.000 × 10^2
Roman numerals
C C C
Binary
1 0 0 1 0 1 1 0 0
1 × 256 + 0 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 1 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 300
Octal
4 5 4
4 × 64 + 5 × 8 + 4 × 1 = 300
Hexadecimal
1 2 c
1 × 256 + 2 × 16 + c × 1 = 300
Read as powers of two: 256 + 32 + 8 + 4 = 300.
In historical numeral systems
Egyptian
3 coils of rope
3 × 100 = 300. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
5 vertical wedges (sixties place), empty units place
5 × 60 + 0 = 300. Places are separated by a space on the tablet, with the higher place written first. The second place is empty, and this is precisely the case the early system could not write unambiguously — the same wedges alone would also read as 1.
Greek (Ionic)
tau, marked as a numeral
tau + keraia
A single letter, tau, marked with a keraia to show it is a number rather than a word.
Hebrew numerals
shin
shin
Maya
3 bars (upper, twenties place) over shell (zero) (lower, units place)
15 × 20 + 0 = 300. Places stack vertically with the smallest at the bottom, so the upper group is worth twenty times the lower.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Triangular number
- Abundant number
- Harshad (Niven) number
Related numbers & connections
300 appears in Numbers in physics, the topic covering numbers that carry a documented physics fact.
Thermopylae in 480 BC is remembered as 300 Spartans, and about 7,000 Greeks held the pass. The figure is accurate about one contingent and misleading about the battle.
View 480 →History
Thermopylae is remembered as 300 Spartans, and roughly 7,000 Greeks held the pass for the first two days. About 1,100 Thespians and Thebans stayed for the final stand alongside the Spartans. The figure 300 is accurate about one contingent and misleading about the battle.
DocumentedHistoryGeography: GreecePeriod: 480 BC
Technology & computing
There are roughly 300 billion emails sent each day. Industry estimates, not a measured total. A large majority is automated or unsolicited, so the figure describes traffic rather than correspondence.
DocumentedTechnology & computingGeography: worldwide
Science
The speed of light in a vacuum is very nearly 300 thousand kilometres per second. Exactly 299,792,458 metres per second, with no measurement error at all — since 1983 the metre has been defined from it, so measuring it more precisely now refines the metre rather than the speed.
DocumentedScienceGeography: worldwide
Finance & economics
There are about 300 trillion US dollars of global debt (worldwide, government, household and corporate combined). Figure as of 2023. Roughly three times annual world output, which is the comparison that makes the figure mean something.
DocumentedFinance & economicsGeography: worldwide, government, household and corporate combined
Sport
Twelve consecutive strikes score 300 in ten-pin bowling — twelve rather than ten because the final frame grants two extra deliveries. It is the maximum possible score, and unlike most perfect performances it is common enough that leagues record hundreds each year.
DocumentedSport
Mathematics
300 is 1 + 2 + … + 24, the number of objects in a triangle of 24 rows. Triangular numbers are the running totals of the counting numbers, which is why they turn up whenever something is arranged in a growing stack.
DocumentedMathematics
Common questions
Is 300 a prime number?
No, 300 is not prime.
What are the factors of 300?
The factors of 300 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 300.
What is 300 in Roman numerals?
300 in Roman numerals is CCC.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 6 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026