1982
1982 is the year the compact disc went on sale.
- Even
- Composite
Where 1982 fits
Why 1982 is special
Digital audio on a disc read by laser replaced a century of physical groove-tracking. The first title released commercially was a Billy Joel album in Japan, and CDs outsold vinyl within six years.
Factors & digit properties
- Divisors (4)
- 1, 2, 991, 1982
- Prime factorisation
- 2 × 991
- Digit sum
- 20
- Digital root
- 2
Representations
- Decimal
- 1982
- Binary
- 11110111110
- Octal
- 3676
- Hexadecimal
- 7be
- Roman numeral
- MCMLXXXII
- Scientific notation
- 1.982 × 10^3
Other mathematical patterns
- Deficient number
- Semiprime
Related numbers & connections
Edison's phonograph of 1877 recorded sound by physical contact and the compact disc of 1982 replaced contact with a laser, ending a century of playback that degraded the recording.
View 1877 →Technology & computing
The CD replaced physical contact between a stylus and a groove with a laser reading pits, which meant playback stopped degrading the recording. Vinyl's later revival is about preference rather than about that technical problem being solved differently.
DocumentedTechnology & computingPeriod: 1982
Common questions
Is 1982 a prime number?
No, 1982 is not prime.
What are the factors of 1982?
The factors of 1982 are 1, 2, 991, 1982.
What is 1982 in Roman numerals?
1982 in Roman numerals is MCMLXXXII.
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