1700
1700 is the year of the Cascadia earthquake, dated by Japanese tsunami records.
- Even
- Composite
Where 1700 fits
Why 1700 is special
No one wrote it down in North America, but a tsunami with no local earthquake was recorded in Japan on 26 January 1700. Matching that against tree rings and sediment dated the quake precisely.
Same number, different meanings
How 1700 is understood across different contexts — never implying one meaning because of another.
- Mathematics
No one wrote it down in North America, but a tsunami with no local earthquake was recorded in Japan on 26 January 1700. Matching that against tree rings and sediment dated the quake precisely.
- History
In 1700, Russia adopted the Julian calendar counted from the birth of Christ, replacing a year count from the supposed creation of the world (Russia).
- Science
A magnitude 9 earthquake off North America in 1700 left no written record there. Japanese records of an 'orphan tsunami' with no felt earthquake, combined with tree-ring dating, fixed its date to the evening of 26 January 1700.
1700 is part of
Factors & digit properties
- Divisors (18)
- 1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 340, 425, 850, 1700
- Prime factorisation
- 2^2 × 5^2 × 17
- Digit sum
- 8
- Digital root
- 8
Representations
- Decimal
- 1700
- Scientific notation
- 1.700 × 10^3
Roman numerals
M D C C
Binary
1 1 0 1 0 1 0 0 1 0 0
1 × 1,024 + 1 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 1,700
Octal
3 2 4 4
3 × 512 + 2 × 64 + 4 × 8 + 4 × 1 = 1,700
Hexadecimal
6 a 4
6 × 256 + a × 16 + 4 × 1 = 1,700
Read as powers of two: 1,024 + 512 + 128 + 32 + 4 = 1,700.
In historical numeral systems
Egyptian
1 lotus, 7 coils of rope
1 × 1,000 + 7 × 100 = 1,700. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 8 vertical wedges (sixties place), 2 corner wedges (units place)
28 × 60 + 20 = 1700. 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
1700 is a year in the 17th century, in the 1700s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1700, Russia adopted the Julian calendar counted from the birth of Christ, replacing a year count from the supposed creation of the world (Russia).
DocumentedHistoryGeography: RussiaPeriod: 1700
Science
A magnitude 9 earthquake off North America in 1700 left no written record there. Japanese records of an 'orphan tsunami' with no felt earthquake, combined with tree-ring dating, fixed its date to the evening of 26 January 1700.
DocumentedScienceGeography: Pacific Northwest and JapanPeriod: 26 January 1700
Common questions
Is 1700 a prime number?
No, 1700 is not prime.
What are the factors of 1700?
The factors of 1700 are 1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 170, 340, 425, 850, 1700.
What is 1700 in Roman numerals?
1700 in Roman numerals is MDCC.
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