1993
1993 is the year the web became something ordinary people could use.
- Odd
- Prime
Where 1993 fits
Why 1993 is special
CERN placed the web in the public domain in April, and the Mosaic browser displayed images inline alongside text. Either alone would have mattered; together they turned a physics documentation system into a public medium within two years.
Same number, different meanings
How 1993 is understood across different contexts — never implying one meaning because of another.
- Mathematics
CERN placed the web in the public domain in April, and the Mosaic browser displayed images inline alongside text. Either alone would have mattered; together they turned a physics documentation system into a public medium within two years.
- History
In 1993, CERN placed the World Wide Web software in the public domain, removing any licence barrier to its adoption (Switzerland).
- Technology & computing
CERN placed the web in the public domain in April 1993 and Mosaic displayed images inline with text the same year. Either alone would have mattered less; together they converted a documentation system into a public medium in about two years.
1993 is part of
Factors & digit properties
- Divisors (2)
- 1, 1993
- Prime factorisation
- 1993
- Digit sum
- 22
- Digital root
- 4
Representations
- Decimal
- 1993
- Scientific notation
- 1.993 × 10^3
Roman numerals
M C M X C I I I
MCMXCIII uses the subtractive pair XC: ten before a hundred — a hundred minus ten.
Binary
1 1 1 1 1 0 0 1 0 0 1
1 × 1,024 + 1 × 512 + 1 × 256 + 1 × 128 + 1 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 1,993
Octal
3 7 1 1
3 × 512 + 7 × 64 + 1 × 8 + 1 × 1 = 1,993
Hexadecimal
7 c 9
7 × 256 + c × 16 + 9 × 1 = 1,993
Read as powers of two: 1,024 + 512 + 256 + 128 + 64 + 8 + 1 = 1,993.
In historical numeral systems
Egyptian
1 lotus, 9 coils of rope, 9 hobbles, 3 strokes
1 × 1,000 + 9 × 100 + 9 × 10 + 3 × 1 = 1,993. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
3 corner wedges + 3 vertical wedges (sixties place), 1 corner wedge + 3 vertical wedges (units place)
33 × 60 + 13 = 1993. 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
1993 is a year in the 20th century, in the 1990s.
The web was published in 1991 and became usable by the public in 1993, when CERN placed it in the public domain and Mosaic displayed images alongside text.
View 1991 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1993, CERN placed the World Wide Web software in the public domain, removing any licence barrier to its adoption (Switzerland).
DocumentedHistoryGeography: SwitzerlandPeriod: 1993
Technology & computing
CERN placed the web in the public domain in April 1993 and Mosaic displayed images inline with text the same year. Either alone would have mattered less; together they converted a documentation system into a public medium in about two years.
DocumentedTechnology & computingPeriod: 1993
Common questions
Is 1993 a prime number?
Yes, 1993 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1993?
The factors of 1993 are 1, 1993.
What is 1993 in Roman numerals?
1993 in Roman numerals is MCMXCIII. XC is subtractive: ten before a hundred — a hundred minus ten. Written additively it would be MDCCCCLXXXXIII, 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