1045
1045 is a medium-carbon steel.
- Odd
- Composite
Where 1045 fits
Why 1045 is special
It is the default general-purpose shaft material: strong enough for most work, cheap, and machinable without special tooling.
Factors & digit properties
- Divisors (8)
- 1, 5, 11, 19, 55, 95, 209, 1045
- Prime factorisation
- 5 × 11 × 19
- Digit sum
- 10
- Digital root
- 1
Representations
- Decimal
- 1045
- Binary
- 10000010101
- Octal
- 2025
- Hexadecimal
- 415
- Roman numeral
- MXLV
- Scientific notation
- 1.045 × 10^3
Other mathematical patterns
- Deficient number
Related numbers & connections
Both are shaft and gear materials; the alloy steel hardens deeper and the carbon steel is cheaper.
View 4140 →More carbon buys strength and costs weldability, which is the basic trade in plain carbon steels.
View 1018 →Technology & computing
AISI 1045 contains roughly 0.45 percent carbon, offering a balance of strength and machinability without alloying additions.
DocumentedTechnology & computingGeography: International — AISI, SAE and Aluminium Association designations
Common questions
Is 1045 a prime number?
No, 1045 is not prime.
What are the factors of 1045?
The factors of 1045 are 1, 5, 11, 19, 55, 95, 209, 1045.
What is 1045 in Roman numerals?
1045 in Roman numerals is MXLV.
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