1610
1610 is the year Galileo published his telescopic observations.
- Even
- Composite
Where 1610 fits
Why 1610 is special
Sidereus Nuncius reported mountains on the Moon, four moons orbiting Jupiter and countless unseen stars. Jupiter's moons mattered most: they were objects visibly orbiting something that was not the Earth.
1610 is part of
Factors & digit properties
- Divisors (16)
- 1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 230, 322, 805, 1610
- Prime factorisation
- 2 × 5 × 7 × 23
- Digit sum
- 8
- Digital root
- 8
Representations
- Decimal
- 1610
- Scientific notation
- 1.610 × 10^3
Roman numerals
M D C X
Binary
1 1 0 0 1 0 0 1 0 1 0
1 × 1,024 + 1 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 1,610
Octal
3 1 1 2
3 × 512 + 1 × 64 + 1 × 8 + 2 × 1 = 1,610
Hexadecimal
6 4 a
6 × 256 + 4 × 16 + a × 1 = 1,610
Read as powers of two: 1,024 + 512 + 64 + 8 + 2 = 1,610.
In historical numeral systems
Egyptian
1 lotus, 6 coils of rope, 1 hobble
1 × 1,000 + 6 × 100 + 1 × 10 = 1,610. 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), 5 corner wedges (units place)
26 × 60 + 50 = 1610. 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
- Abundant number
Related numbers & connections
1610 is a year in the 17th century, in the 1610s.
Kepler's supernova in 1604 and Galileo's telescope observations in 1610. Between them they removed the idea that the heavens were unchanging and that everything orbited the Earth.
View 1604 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Science
In 1610, Galileo observed the four largest moons of Jupiter (Europe).
DocumentedScienceGeography: EuropePeriod: 1610Galileo's four moons of Jupiter were the observation that did the damage in 1610. Whatever else was disputed, here were bodies plainly circling a centre that was not the Earth, which the prevailing cosmology had no room for.
DocumentedSciencePeriod: 1610
Common questions
Is 1610 a prime number?
No, 1610 is not prime.
What are the factors of 1610?
The factors of 1610 are 1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 230, 322, 805, 1610.
What is 1610 in Roman numerals?
1610 in Roman numerals is MDCX.
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