700
A CD-R typically holds about 700 megabytes.
- Even
- Composite
Where 700 fits
Why 700 is special
The extra 50 MB over the original 650 comes from packing the spiral track slightly tighter, which was within tolerance for drives already built. It is a rare case of a storage format gaining capacity without changing physically.
700 is part of
Factors & digit properties
- Divisors (18)
- 1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700
- Prime factorisation
- 2^2 × 5^2 × 7
- Digit sum
- 7
- Digital root
- 7
Representations
- Decimal
- 700
- Scientific notation
- 7.000 × 10^2
Roman numerals
D C C
Binary
1 0 1 0 1 1 1 1 0 0
1 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 700
Octal
1 2 7 4
1 × 512 + 2 × 64 + 7 × 8 + 4 × 1 = 700
Hexadecimal
2 b c
2 × 256 + b × 16 + c × 1 = 700
Read as powers of two: 512 + 128 + 32 + 16 + 8 + 4 = 700.
In historical numeral systems
Egyptian
7 coils of rope
7 × 100 = 700. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 1 vertical wedge (sixties place), 4 corner wedges (units place)
11 × 60 + 40 = 700. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
psi, marked as a numeral
psi + keraia
A single letter, psi, marked with a keraia to show it is a number rather than a word.
Hebrew numerals
tav, then shin
tav-shin
tav (400) + shin (300) = 700, written in descending order.
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
- Abundant number
- Happy number
- Harshad (Niven) number
Related numbers & connections
A DVD holds about seven times a CD-R, which is the difference between an album and a feature film on one disc.
View 4700 →Technology & computing
The wavelength conventionally used to represent red light is about 700 nanometres (worldwide, a convention rather than a boundary). Red occupies roughly 620 to 750 nanometres. Colour names have no wavelength boundaries in nature — the divisions in a textbook spectrum are conventions, and cultures divide the same spectrum into different numbers of named colours.
DocumentedTechnology & computingGeography: worldwide, a convention rather than a boundaryCD-R reached about 700 MB by packing the spiral track slightly closer together, within tolerances drives already met. It is an unusual case of a storage format gaining capacity without any physical change to the medium's size or the hardware reading it.
DocumentedTechnology & computing
Common questions
Is 700 a prime number?
No, 700 is not prime.
What are the factors of 700?
The factors of 700 are 1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700.
What is 700 in Roman numerals?
700 in Roman numerals is DCC.
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: 15 July 2026