1958
1958 is the year the integrated circuit was demonstrated.
- Even
- Composite
Where 1958 fits
Why 1958 is special
Jack Kilby built the first working example in September and Robert Noyce independently developed a more manufacturable version months later. Putting many components on one piece of semiconductor is the step that everything digital since depends on.
Factors & digit properties
- Divisors (8)
- 1, 2, 11, 22, 89, 178, 979, 1958
- Prime factorisation
- 2 × 11 × 89
- Digit sum
- 23
- Digital root
- 5
Representations
- Decimal
- 1958
- Binary
- 11110100110
- Octal
- 3646
- Hexadecimal
- 7a6
- Roman numeral
- MCMLVIII
- Scientific notation
- 1.958 × 10^3
Other mathematical patterns
- Deficient number
Related numbers & connections
Kilby demonstrated an integrated circuit in 1958; Noyce's silicon design the following year is the one that could be manufactured at scale, and every processor since descends from it.
View 1959 →Technology & computing
Jack Kilby demonstrated the first working integrated circuit in September 1958 and Robert Noyce independently produced a more manufacturable design shortly after. Putting many components onto one piece of semiconductor is the step everything digital depends on.
DocumentedTechnology & computingPeriod: 1958
Common questions
Is 1958 a prime number?
No, 1958 is not prime.
What are the factors of 1958?
The factors of 1958 are 1, 2, 11, 22, 89, 178, 979, 1958.
What is 1958 in Roman numerals?
1958 in Roman numerals is MCMLVIII.
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