1481
1481 is the year the Spanish Inquisition held its first auto-da-fé.
- Odd
- Prime
Where 1481 fits
Why 1481 is special
Six people were burned in Seville. The Inquisition operated as an instrument of the Spanish crown rather than the papacy, which is the detail that distinguishes it from the medieval institution.
1481 is part of
Factors & digit properties
- Divisors (2)
- 1, 1481
- Prime factorisation
- 1481
- Digit sum
- 14
- Digital root
- 5
Representations
- Decimal
- 1481
- Binary
- 10111001001
- Octal
- 2711
- Hexadecimal
- 5c9
- Roman numeral
- MCDLXXXI
- Scientific notation
- 1.481 × 10^3
Other mathematical patterns
- Deficient number
- Happy number
- Sophie Germain prime
- Twin prime
Related numbers & connections
The papal Inquisition of 1231 introduced rules of evidence where lynching had prevailed; the Spanish Inquisition from 1481 answered to the crown rather than to Rome, which is what made it an instrument of state.
View 1231 →Law & regulation
The Spanish Inquisition answered to the crown, not to Rome, and popes repeatedly failed to restrain it. That control is what made it an instrument of state policy.
DocumentedLaw & regulationGeography: SpainPeriod: 1481
Common questions
Is 1481 a prime number?
Yes, 1481 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1481?
The factors of 1481 are 1, 1481.
What is 1481 in Roman numerals?
1481 in Roman numerals is MCDLXXXI.
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