1204
1204 is the year crusaders sacked Constantinople.
- Even
- Composite
Where 1204 fits
Why 1204 is special
The Fourth Crusade never reached the Holy Land. It captured and looted the largest Christian city in the world instead, and the Byzantine empire never recovered its former strength.
1204 is part of
Factors & digit properties
- Divisors (12)
- 1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204
- Prime factorisation
- 2^2 × 7 × 43
- Digit sum
- 7
- Digital root
- 7
Representations
- Decimal
- 1204
- Scientific notation
- 1.204 × 10^3
Roman numerals
M C C I V
MCCIV uses the subtractive pair IV: one before five — five minus one.
Binary
1 0 0 1 0 1 1 0 1 0 0
1 × 1,024 + 0 × 512 + 0 × 256 + 1 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 1,204
Octal
2 2 6 4
2 × 512 + 2 × 64 + 6 × 8 + 4 × 1 = 1,204
Hexadecimal
4 b 4
4 × 256 + b × 16 + 4 × 1 = 1,204
Read as powers of two: 1,024 + 128 + 32 + 16 + 4 = 1,204.
In historical numeral systems
Egyptian
1 lotus, 2 coils of rope, 4 strokes
1 × 1,000 + 2 × 100 + 4 × 1 = 1,204. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges (sixties place), 4 vertical wedges (units place)
20 × 60 + 4 = 1204. Places are separated by a space on the tablet, with the higher place written first.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Harshad (Niven) number
Related numbers & connections
1204 is a year in the 13th century, in the 1200s.
Constantinople was sacked by crusaders in 1204 and fell to the Ottomans in 1453. The city never recovered its strength after the first, which is a substantial part of why it could not resist the second.
View 1453 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- contrasts with1453
why?
Strength 0.50, confidence "high".
History
In 1204, the Fourth Crusade sacked Constantinople, a wound the Byzantine empire never recovered from (Constantinople).
DocumentedHistoryGeography: ConstantinoplePeriod: 1204The Fourth Crusade was diverted by debt and Venetian interests into sacking Constantinople, the capital of Eastern Christianity. The city's weakening from 1204 is a substantial part of why it fell to the Ottomans in 1453.
DocumentedHistoryGeography: ConstantinoplePeriod: 1204
Common questions
Is 1204 a prime number?
No, 1204 is not prime.
What are the factors of 1204?
The factors of 1204 are 1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204.
What is 1204 in Roman numerals?
1204 in Roman numerals is MCCIV. IV is subtractive: one before five — five minus one. Written additively it would be MCCIIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026