1409
1409 is the year the Council of Pisa elected a third pope.
- Odd
- Prime
Where 1409 fits
Why 1409 is special
Convened to end a schism between two claimants, it deposed both and elected a third — neither of the existing popes accepted the ruling, so there were then three.
1409 is part of
Factors & digit properties
- Divisors (2)
- 1, 1409
- Prime factorisation
- 1409
- Digit sum
- 14
- Digital root
- 5
Representations
- Decimal
- 1409
- Binary
- 10110000001
- Octal
- 2601
- Hexadecimal
- 581
- Roman numeral
- MCDIX
- Scientific notation
- 1.409 × 10^3
Other mathematical patterns
- Deficient number
- Sophie Germain prime
Related numbers & connections
The Western Schism began in 1378 with two claimants; the Council of Pisa in 1409 tried to resolve it and produced a third.
View 1378 →Other connections
- developed from1378
why?
Strength 0.50, confidence "high".
Religion & belief
Pisa in 1409 attempted to resolve a two-pope schism and produced a third claimant, because neither incumbent recognised its authority. Constance resolved it eight years later by removing all three.
DocumentedReligion & beliefGeography: PisaPeriod: 1409
Common questions
Is 1409 a prime number?
Yes, 1409 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1409?
The factors of 1409 are 1, 1409.
What is 1409 in Roman numerals?
1409 in Roman numerals is MCDIX.
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