1087
1087 is a year in the 11th century. William the Conqueror died and his lands were divided between his sons (England).
- Odd
- Prime
Where 1087 fits
Why 1087 is special
1087 has a profile because of what happened in it rather than because of any property of the number: William the Conqueror died and his lands were divided between his sons (England).
1087 is part of
Factors & digit properties
- Divisors (2)
- 1, 1087
- Prime factorisation
- 1087
- Digit sum
- 16
- Digital root
- 7
Representations
- Decimal
- 1087
- Scientific notation
- 1.087 × 10^3
Roman numerals
M L X X X V I I
Binary
1 0 0 0 0 1 1 1 1 1 1
1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 1,087
Octal
2 0 7 7
2 × 512 + 0 × 64 + 7 × 8 + 7 × 1 = 1,087
Hexadecimal
4 3 f
4 × 256 + 3 × 16 + f × 1 = 1,087
Read as powers of two: 1,024 + 32 + 16 + 8 + 4 + 2 + 1 = 1,087.
In historical numeral systems
Egyptian
1 lotus, 8 hobbles, 7 strokes
1 × 1,000 + 8 × 10 + 7 × 1 = 1,087. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 8 vertical wedges (sixties place), 7 vertical wedges (units place)
18 × 60 + 7 = 1087. 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
- Lucky number (mathematical sieve)
Related numbers & connections
1087 is a year in the 11th century, in the 1080s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1087, William the Conqueror died and his lands were divided between his sons (England).
DocumentedHistoryGeography: EnglandPeriod: 1087
Common questions
Is 1087 a prime number?
Yes, 1087 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1087?
The factors of 1087 are 1, 1087.
What is 1087 in Roman numerals?
1087 in Roman numerals is MLXXXVII.
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: 15 July 2026