1979
1979 is the year of the Iranian Revolution and the founding of the Islamic Republic.
- Odd
- Prime
Where 1979 fits
Why 1979 is special
The revolution replaced a monarchy with a clerical republic within a year and reshaped regional politics for decades. 1979 also saw the Soviet invasion of Afghanistan and the first commercial cellular network, making it a year that is referenced from several unrelated directions.
1979 is part of
Factors & digit properties
- Divisors (2)
- 1, 1979
- Prime factorisation
- 1979
- Digit sum
- 26
- Digital root
- 8
Representations
- Decimal
- 1979
- Binary
- 11110111011
- Octal
- 3673
- Hexadecimal
- 7bb
- Roman numeral
- MCMLXXIX
- Scientific notation
- 1.979 × 10^3
Other mathematical patterns
- Deficient number
Related numbers & connections
The number entered general reference through the novel published in 1979.
View 42 →History
1979 produced the Iranian Revolution, the Soviet invasion of Afghanistan and the first commercial cellular network. The three are unrelated and each is heavily referenced, which is why the year is cited from several directions that rarely acknowledge one another.
DocumentedHistoryPeriod: 1979
Common questions
Is 1979 a prime number?
Yes, 1979 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1979?
The factors of 1979 are 1, 1979.
What is 1979 in Roman numerals?
1979 in Roman numerals is MCMLXXIX.
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