2018
2018 is the year GDPR took effect.
- Even
- Composite
Where 2018 fits
Why 2018 is special
It gave people rights over data held about them and set fines proportional to global turnover. Its most visible consequence for most users is a consent banner on every website, which was not the intended outcome.
Same number, different meanings
How 2018 is understood across different contexts — never implying one meaning because of another.
- Mathematics
It gave people rights over data held about them and set fines proportional to global turnover. Its most visible consequence for most users is a consent banner on every website, which was not the intended outcome.
- History
In 2018, the General Data Protection Regulation took effect across the European Union (Europe).
- Technology & computing
RFC 2018 specifies the TCP selective acknowledgement option. Without it a receiver can only report contiguous progress, so a single loss forces retransmission of everything sent after it.
- Law & regulation
GDPR granted access, correction and erasure rights and set penalties large enough to matter. What most people encounter is a consent dialogue on every site, which reflects how the industry chose to comply rather than what the regulation required.
2018 is part of
Factors & digit properties
- Divisors (4)
- 1, 2, 1009, 2018
- Prime factorisation
- 2 × 1009
- Digit sum
- 11
- Digital root
- 2
Representations
- Decimal
- 2018
- Scientific notation
- 2.018 × 10^3
Roman numerals
M M X V I I I
Binary
1 1 1 1 1 1 0 0 0 1 0
1 × 1,024 + 1 × 512 + 1 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 2,018
Octal
3 7 4 2
3 × 512 + 7 × 64 + 4 × 8 + 2 × 1 = 2,018
Hexadecimal
7 e 2
7 × 256 + e × 16 + 2 × 1 = 2,018
Read as powers of two: 1,024 + 512 + 256 + 128 + 64 + 32 + 2 = 2,018.
In historical numeral systems
Egyptian
2 lotuses, 1 hobble, 8 strokes
2 × 1,000 + 1 × 10 + 8 × 1 = 2,018. 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), 3 corner wedges + 8 vertical wedges (units place)
33 × 60 + 38 = 2018. 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
- Semiprime
Related numbers & connections
2018 is a year in the 21st century, in the 2010s.
GDPR took effect five years after the Snowden disclosures, and both are part of the same shift in how personal data is treated legally and technically.
View 2013 →History
In 2018, the General Data Protection Regulation took effect across the European Union (Europe).
DocumentedHistoryGeography: EuropePeriod: 2018
Technology & computing
RFC 2018 specifies the TCP selective acknowledgement option. Without it a receiver can only report contiguous progress, so a single loss forces retransmission of everything sent after it.
DocumentedTechnology & computingGeography: International — IETFPeriod: 1996
Law & regulation
GDPR granted access, correction and erasure rights and set penalties large enough to matter. What most people encounter is a consent dialogue on every site, which reflects how the industry chose to comply rather than what the regulation required.
DocumentedLaw & regulationGeography: European UnionPeriod: 2018
Common questions
Is 2018 a prime number?
No, 2018 is not prime.
What are the factors of 2018?
The factors of 2018 are 1, 2, 1009, 2018.
What is 2018 in Roman numerals?
2018 in Roman numerals is MMXVIII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 3 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026