1456
1456 is the year Joan of Arc's conviction was annulled.
- Even
- Composite
Where 1456 fits
Why 1456 is special
A retrial twenty-five years after her execution found the original trial procedurally corrupt. She was canonised in 1920, 489 years after being burned as a heretic.
Factors & digit properties
- Divisors (20)
- 1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456
- Prime factorisation
- 2^4 × 7 × 13
- Digit sum
- 16
- Digital root
- 7
Representations
- Decimal
- 1456
- Binary
- 10110110000
- Octal
- 2660
- Hexadecimal
- 5b0
- Roman numeral
- MCDLVI
- Scientific notation
- 1.456 × 10^3
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Law & regulation
Joan of Arc was executed in 1431, her conviction annulled in 1456 and she was made a saint in 1920. The same institution reached all three verdicts.
DocumentedLaw & regulationGeography: FrancePeriod: 1456
Common questions
Is 1456 a prime number?
No, 1456 is not prime.
What are the factors of 1456?
The factors of 1456 are 1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456.
What is 1456 in Roman numerals?
1456 in Roman numerals is MCDLVI.
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