2,000
2000 was the year of the 'Y2K' or 'Millennium Bug' scare, when many computer systems that stored years as two digits risked misreading '00' as 1900 instead of 2000.
- Even
- Composite
Where 2,000 fits
Why 2,000 is special
The transition to the year 2000 triggered one of the largest coordinated software remediation efforts in computing history — the 'Y2K bug' — because many older systems stored years using only two digits and risked rolling over from '99' to '00' incorrectly. It also marked a globally celebrated calendar milestone, with New Year's Eve 1999-2000 seeing some of the largest simultaneous public celebrations in history.
Same number, different meanings
How 2,000 is understood across different contexts — never implying one meaning because of another.
- Mathematics
The transition to the year 2000 triggered one of the largest coordinated software remediation efforts in computing history — the 'Y2K bug' — because many older systems stored years using only two digits and risked rolling over from '99' to '00' incorrectly. It also marked a globally celebrated calendar milestone, with New Year's Eve 1999-2000 seeing some of the largest simultaneous public celebrations in history.
- Science
In 2000, a working draft of the human genome was announced.
- Technology & computing
The 'Y2K' or 'Millennium Bug' was a widely anticipated software problem in which computer systems storing years as two digits risked misinterpreting the year 2000 as 1900; a global remediation effort estimated to have cost in the hundreds of billions of dollars addressed it before the date arrived.
- Culture
The transition from 1999 to 2000 was marked by some of the largest coordinated public New Year celebrations in history, as the change was widely (if not universally, by strict calendar reckoning) treated as the start of a new millennium.
2,000 is part of
Factors & digit properties
- Divisors (20)
- 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000
- Prime factorisation
- 2^4 × 5^3
- Digit sum
- 2
- Digital root
- 2
Representations
- Decimal
- 2000
- Scientific notation
- 2.000 × 10^3
Roman numerals
M M
Binary
1 1 1 1 1 0 1 0 0 0 0
1 × 1,024 + 1 × 512 + 1 × 256 + 1 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 0 × 8 + 0 × 4 + 0 × 2 + 0 × 1 = 2,000
Octal
3 7 2 0
3 × 512 + 7 × 64 + 2 × 8 + 0 × 1 = 2,000
Hexadecimal
7 d 0
7 × 256 + d × 16 + 0 × 1 = 2,000
Read as powers of two: 1,024 + 512 + 256 + 128 + 64 + 16 = 2,000.
In historical numeral systems
Egyptian
2 lotuses
2 × 1,000 = 2,000. 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), 2 corner wedges (units place)
33 × 60 + 20 = 2000. 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
- Abundant number
- Powerful number
- Harshad (Niven) number
Related numbers & connections
2000 is twice 1000 (2 × 1000 = 2000).
View 1000 →2000 is a year in the 20th century, in the 2000s.
One deadline attracted years of coordinated remediation and passed quietly; the other has a firmer cause and far less attention.
View 2038 →Mathematically related
- is a multiple of1000
why?
Strength 0.50, confidence "high".
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Science
In 2000, a working draft of the human genome was announced.
DocumentedScienceGeography: globalPeriod: 2000
Technology & computing
The 'Y2K' or 'Millennium Bug' was a widely anticipated software problem in which computer systems storing years as two digits risked misinterpreting the year 2000 as 1900; a global remediation effort estimated to have cost in the hundreds of billions of dollars addressed it before the date arrived.
DocumentedTechnology & computingPeriod: 1990s-2000
Culture
The transition from 1999 to 2000 was marked by some of the largest coordinated public New Year celebrations in history, as the change was widely (if not universally, by strict calendar reckoning) treated as the start of a new millennium.
DocumentedCulturePeriod: 31 December 1999 - 1 January 2000
Common questions
Is 2,000 a prime number?
No, 2,000 is not prime.
What are the factors of 2,000?
The factors of 2,000 are 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000.
What is 2,000 in Roman numerals?
2,000 in Roman numerals is MM.
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