1946
1946 is the year ENIAC was unveiled.
- Even
- Composite
Where 1946 fits
Why 1946 is special
It weighed 27 tonnes and was programmed by physically rewiring it, a task performed by six women whose contribution went unacknowledged for decades. It is often called the first electronic general-purpose computer, a claim that depends heavily on how the terms are defined.
1946 is part of
Factors & digit properties
- Divisors (8)
- 1, 2, 7, 14, 139, 278, 973, 1946
- Prime factorisation
- 2 × 7 × 139
- Digit sum
- 20
- Digital root
- 2
Representations
- Decimal
- 1946
- Scientific notation
- 1.946 × 10^3
Roman numerals
M C M X L V I
MCMXLVI uses the subtractive pair XL: ten before fifty — fifty minus ten.
Binary
1 1 1 1 0 0 1 1 0 1 0
1 × 1,024 + 1 × 512 + 1 × 256 + 1 × 128 + 0 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 1,946
Octal
3 6 3 2
3 × 512 + 6 × 64 + 3 × 8 + 2 × 1 = 1,946
Hexadecimal
7 9 a
7 × 256 + 9 × 16 + a × 1 = 1,946
Read as powers of two: 1,024 + 512 + 256 + 128 + 16 + 8 + 2 = 1,946.
In historical numeral systems
Egyptian
1 lotus, 9 coils of rope, 4 hobbles, 6 strokes
1 × 1,000 + 9 × 100 + 4 × 10 + 6 × 1 = 1,946. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
3 corner wedges + 2 vertical wedges (sixties place), 2 corner wedges + 6 vertical wedges (units place)
32 × 60 + 26 = 1946. Places are separated by a space on the tablet, with the higher place written first.
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
- Deficient number
Related numbers & connections
1946 is a year in the 20th century, in the 1940s.
Five years took computing from a rewired laboratory instrument to a product a customer could buy, and UNIVAC's televised election forecast put it in front of the public.
View 1951 →Technology & computing
In 1946, ENIAC was unveiled, and the first meeting of the United Nations General Assembly was held in London (United States and England).
DocumentedTechnology & computingGeography: United States and EnglandPeriod: 1946ENIAC weighed 27 tonnes and was programmed by physically rewiring it, work done by six women whose role went unacknowledged for decades. Whether it was the first electronic general-purpose computer depends entirely on how the terms are defined.
DocumentedTechnology & computingPeriod: 1946
Common questions
Is 1946 a prime number?
No, 1946 is not prime.
What are the factors of 1946?
The factors of 1946 are 1, 2, 7, 14, 139, 278, 973, 1946.
What is 1946 in Roman numerals?
1946 in Roman numerals is MCMXLVI. XL is subtractive: ten before fifty — fifty minus ten. Written additively it would be MDCCCCXXXXVI, 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: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026