1054
SN 1054 is the supernova that produced the Crab Nebula.
- Even
- Composite
Where 1054 fits
Why 1054 is special
Chinese astronomers recorded a 'guest star' visible in daylight for 23 days. The expanding remnant is still measurable today, and running the expansion backwards gives a date matching the Chinese records almost exactly — a rare direct check of a thousand-year-old observation.
1054 connects to:
- historical years — appears in
- 1006 — appears alongside
Same number, different meanings
How 1054 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Chinese astronomers recorded a 'guest star' visible in daylight for 23 days. The expanding remnant is still measurable today, and running the expansion backwards gives a date matching the Chinese records almost exactly — a rare direct check of a thousand-year-old observation.
- History
In 1054, the mutual excommunications between Rome and Constantinople opened the schism between the Latin and Greek churches (Europe).
- Science
In 1054, Chinese astronomers recorded a guest star visible in daylight for weeks, now identified as the supernova that formed the Crab Nebula (China).
1054 is part of
Factors & digit properties
- Divisors (8)
- 1, 2, 17, 31, 34, 62, 527, 1054
- Prime factorisation
- 2 × 17 × 31
- Digit sum
- 10
- Digital root
- 1
Representations
- Decimal
- 1054
- Scientific notation
- 1.054 × 10^3
Roman numerals
M L I V
MLIV uses the subtractive pair IV: one before five — five minus one.
Binary
1 0 0 0 0 0 1 1 1 1 0
1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 0 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 0 × 1 = 1,054
Octal
2 0 3 6
2 × 512 + 0 × 64 + 3 × 8 + 6 × 1 = 1,054
Hexadecimal
4 1 e
4 × 256 + 1 × 16 + e × 1 = 1,054
Read as powers of two: 1,024 + 16 + 8 + 4 + 2 = 1,054.
In historical numeral systems
Egyptian
1 lotus, 5 hobbles, 4 strokes
1 × 1,000 + 5 × 10 + 4 × 1 = 1,054. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 7 vertical wedges (sixties place), 3 corner wedges + 4 vertical wedges (units place)
17 × 60 + 34 = 1054. 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
- Deficient number
Related numbers & connections
1054 is a year in the 11th century, in the 1050s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
- appears alongside1006
why?
Strength 0.50, confidence "high".
History
In 1054, the mutual excommunications between Rome and Constantinople opened the schism between the Latin and Greek churches (Europe).
DocumentedHistoryGeography: EuropePeriod: 1054
Science
In 1054, Chinese astronomers recorded a guest star visible in daylight for weeks, now identified as the supernova that formed the Crab Nebula (China).
DocumentedScienceGeography: ChinaPeriod: 1054Chinese astronomers logged a star visible in daylight for 23 days in 1054. Measuring how fast the Crab Nebula is still expanding and extrapolating back gives the same date, which independently confirms an observation made nearly a thousand years ago.
DocumentedScienceGeography: recorded in ChinaPeriod: 1054
Common questions
Is 1054 a prime number?
No, 1054 is not prime.
What are the factors of 1054?
The factors of 1054 are 1, 2, 17, 31, 34, 62, 527, 1054.
What is 1054 in Roman numerals?
1054 in Roman numerals is MLIV. IV is subtractive: one before five — five minus one. Written additively it would be MLIIII, 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: 3 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026