1700
1700 is the year of the Cascadia earthquake, dated by Japanese tsunami records.
- Even
- Composite
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.
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
- Binary
- 11010100100
- Octal
- 3244
- Hexadecimal
- 6a4
- Roman numeral
- MDCC
- Scientific notation
- 1.700 × 10^3
Other mathematical patterns
- Abundant number
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: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026