1593
1593 is the year the first practical thermometer was devised.
- Odd
- Composite
Where 1593 fits
Why 1593 is special
Galileo's thermoscope showed temperature change without a scale, so it could say hotter or colder but not how much. Quantifying temperature required a fixed reference, which took another century.
Same number, different meanings
How 1593 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Galileo's thermoscope showed temperature change without a scale, so it could say hotter or colder but not how much. Quantifying temperature required a fixed reference, which took another century.
- Technology & computing
In 1593, Galileo built a thermoscope, an early instrument for comparing degrees of heat (Italy).
- Science
The thermoscope of 1593 indicated that temperature had changed and could not say by how much. Turning a comparative instrument into a measuring one required agreed fixed points, which arrived with Fahrenheit and Celsius.
1593 is part of
Factors & digit properties
- Divisors (8)
- 1, 3, 9, 27, 59, 177, 531, 1593
- Prime factorisation
- 3^3 × 59
- Digit sum
- 18
- Digital root
- 9
Representations
- Decimal
- 1593
- Scientific notation
- 1.593 × 10^3
Roman numerals
M D X C I I I
MDXCIII uses the subtractive pair XC: ten before a hundred — a hundred minus ten.
Binary
1 1 0 0 0 1 1 1 0 0 1
1 × 1,024 + 1 × 512 + 0 × 256 + 0 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 1,593
Octal
3 0 7 1
3 × 512 + 0 × 64 + 7 × 8 + 1 × 1 = 1,593
Hexadecimal
6 3 9
6 × 256 + 3 × 16 + 9 × 1 = 1,593
Read as powers of two: 1,024 + 512 + 32 + 16 + 8 + 1 = 1,593.
In historical numeral systems
Egyptian
1 lotus, 5 coils of rope, 9 hobbles, 3 strokes
1 × 1,000 + 5 × 100 + 9 × 10 + 3 × 1 = 1,593. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 6 vertical wedges (sixties place), 3 corner wedges + 3 vertical wedges (units place)
26 × 60 + 33 = 1593. Places are separated by a space on the tablet, with the higher place written first.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Deficient number
Related numbers & connections
1593 is a year in the 16th century, in the 1590s.
The thermoscope of 1593 showed temperature changing without measuring it. Fahrenheit's scale in 1724 supplied the fixed points that turned comparison into measurement.
View 1724 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- developed from1724
why?
Strength 0.50, confidence "high".
Technology & computing
In 1593, Galileo built a thermoscope, an early instrument for comparing degrees of heat (Italy).
DocumentedTechnology & computingGeography: ItalyPeriod: 1593
Science
The thermoscope of 1593 indicated that temperature had changed and could not say by how much. Turning a comparative instrument into a measuring one required agreed fixed points, which arrived with Fahrenheit and Celsius.
DocumentedSciencePeriod: 1593
Common questions
Is 1593 a prime number?
No, 1593 is not prime.
What are the factors of 1593?
The factors of 1593 are 1, 3, 9, 27, 59, 177, 531, 1593.
What is 1593 in Roman numerals?
1593 in Roman numerals is MDXCIII. XC is subtractive: ten before a hundred — a hundred minus ten. Written additively it would be MDLXXXXIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026