1998
1998 is the year Google was founded.
- Even
- Composite
Where 1998 fits
Why 1998 is special
Its insight was to rank pages by which other pages linked to them, treating links as votes, rather than by counting words on the page. Search results had been trivially manipulable before that, and the approach reshaped what the web was for.
Factors & digit properties
- Divisors (16)
- 1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 111, 222, 333, 666, 999, 1998
- Prime factorisation
- 2 × 3^3 × 37
- Digit sum
- 27
- Digital root
- 9
Representations
- Decimal
- 1998
- Binary
- 11111001110
- Octal
- 3716
- Hexadecimal
- 7ce
- Roman numeral
- MCMXCVIII
- Scientific notation
- 1.998 × 10^3
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
Ranking pages by inbound links rather than by word counts arrived three years into the commercial web, once its scale had made the older approach useless.
View 1995 →Technology & computing
Google ranked pages by which other pages linked to them rather than by counting words on the page itself. Word-counting had been trivially gameable, and the change altered not just search quality but what publishing on the web was for.
DocumentedTechnology & computingPeriod: 1998
Common questions
Is 1998 a prime number?
No, 1998 is not prime.
What are the factors of 1998?
The factors of 1998 are 1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 111, 222, 333, 666, 999, 1998.
What is 1998 in Roman numerals?
1998 in Roman numerals is MCMXCVIII.
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: 3 August 2026