763
763 is the year of a famine in Constantinople severe enough that the Bosphorus froze.
- Odd
- Composite
Where 763 fits
Why 763 is special
Contemporary accounts describe ice covering the strait, which is not a normal occurrence and is used as a data point in reconstructions of medieval climate.
763 is part of
Factors & digit properties
- Divisors (4)
- 1, 7, 109, 763
- Prime factorisation
- 7 × 109
- Digit sum
- 16
- Digital root
- 7
Representations
- Decimal
- 763
- Binary
- 1011111011
- Octal
- 1373
- Hexadecimal
- 2fb
- Roman numeral
- DCCLXIII
- Scientific notation
- 7.630 × 10^2
Other mathematical patterns
- Deficient number
- Happy number
- Semiprime
History
Byzantine chronicles record the Bosphorus freezing in 763, an event used alongside other documentary evidence in reconstructing medieval climate. Written records serve as proxy data where instruments do not exist.
DocumentedHistoryGeography: ConstantinoplePeriod: 763
Common questions
Is 763 a prime number?
No, 763 is not prime.
What are the factors of 763?
The factors of 763 are 1, 7, 109, 763.
What is 763 in Roman numerals?
763 in Roman numerals is DCCLXIII.
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