1590
1590 is the approximate year the compound microscope was invented.
- Even
- Composite
Where 1590 fits
Why 1590 is special
Two lenses in series magnified far more than one, and the instrument revealed a world nobody had suspected. Hooke and Leeuwenhoek made it scientifically productive decades later.
Factors & digit properties
- Divisors (16)
- 1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590
- Prime factorisation
- 2 × 3 × 5 × 53
- Digit sum
- 15
- Digital root
- 6
Representations
- Decimal
- 1590
- Binary
- 11000110110
- Octal
- 3066
- Hexadecimal
- 636
- Roman numeral
- MDXC
- Scientific notation
- 1.590 × 10^3
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
Compound microscopes existed from around 1590 and produced little for decades. Leeuwenhoek's single-lens instruments from 1674 revealed microorganisms and outperformed compound designs for a century.
View 1674 →Other connections
- developed from1674
why?
Strength 0.50, confidence "high".
Technology & computing
Compound microscopes existed from around 1590 and produced little for seventy years. Systematic observation with them began with Hooke and Leeuwenhoek in the 1660s and 1670s.
DocumentedTechnology & computingGeography: NetherlandsPeriod: around 1590
Common questions
Is 1590 a prime number?
No, 1590 is not prime.
What are the factors of 1590?
The factors of 1590 are 1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590.
What is 1590 in Roman numerals?
1590 in Roman numerals is MDXC.
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