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.
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
- Binary
- 10000011110
- Octal
- 2036
- Hexadecimal
- 41e
- Roman numeral
- MLIV
- Scientific notation
- 1.054 × 10^3
Other mathematical patterns
- Deficient number
Related numbers & connections
Two supernovae recorded within fifty years of each other by observers across Asia, the Middle East and Europe. Nothing comparable has been seen with the naked eye since 1604.
View 1006 →Numbers Around Us
- appears alongside1006
why?
Strength 0.50, confidence "high".
Science
Chinese 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.
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