704
The IBM 704 was the first mass-produced computer with floating-point hardware.
- Even
- Composite
Where 704 fits
Why 704 is special
Both Fortran and Lisp were written for it, which makes it the machine two enduring language families were born on.
Factors & digit properties
- Divisors (14)
- 1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 176, 352, 704
- Prime factorisation
- 2^6 × 11
- Digit sum
- 11
- Digital root
- 2
Representations
- Decimal
- 704
- Scientific notation
- 7.040 × 10^2
Roman numerals
D C C I V
DCCIV uses the subtractive pair IV: one before five — five minus one.
Binary
1 0 1 1 0 0 0 0 0 0
1 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 0 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 704
Octal
1 3 0 0
1 × 512 + 3 × 64 + 0 × 8 + 0 × 1 = 704
Hexadecimal
2 c 0
2 × 256 + c × 16 + 0 × 1 = 704
Read as powers of two: 512 + 128 + 64 = 704.
In historical numeral systems
Egyptian
7 coils of rope, 4 strokes
7 × 100 + 4 × 1 = 704. 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 + 4 vertical wedges (units place)
11 × 60 + 44 = 704. Places are separated by a space on the tablet, with the higher place written first.
Greek (Ionic)
psi, then delta, marked as a numeral
psi-delta + keraia
psi + delta written in descending order and added — the letters carry their values wherever they stand, so this is addition, not place value.
Hebrew numerals
tav, then shin, then dalet
tav-shin-dalet
tav (400) + shin (300) + dalet (4) = 704, 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
- Harshad (Niven) number
Related numbers & connections
The 650 sold in thousands and the 704 introduced floating-point hardware; between them they made computing routine and capable.
View 650 →Technology & computing
The IBM 704 provided built-in floating-point arithmetic and index registers. Fortran and Lisp were both first implemented on it in the late 1950s.
DocumentedTechnology & computingGeography: United StatesPeriod: 1954–1960
Common questions
Is 704 a prime number?
No, 704 is not prime.
What are the factors of 704?
The factors of 704 are 1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 176, 352, 704.
What is 704 in Roman numerals?
704 in Roman numerals is DCCIV. IV is subtractive: one before five — five minus one. Written additively it would be DCCIIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026