1061
1061 is a year in the 11th century. The Norman conquest of Sicily began, ending two centuries of Muslim rule over the island (Sicily).
- Odd
- Prime
Where 1061 fits
Why 1061 is special
1061 has a profile because of what happened in it rather than because of any property of the number: the Norman conquest of Sicily began, ending two centuries of Muslim rule over the island (Sicily).
1061 is part of
Factors & digit properties
- Divisors (2)
- 1, 1061
- Prime factorisation
- 1061
- Digit sum
- 8
- Digital root
- 8
Representations
- Decimal
- 1061
- Scientific notation
- 1.061 × 10^3
Roman numerals
M L X I
Binary
1 0 0 0 0 1 0 0 1 0 1
1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 1 × 4 + 0 × 2 + 1 × 1 = 1,061
Octal
2 0 4 5
2 × 512 + 0 × 64 + 4 × 8 + 5 × 1 = 1,061
Hexadecimal
4 2 5
4 × 256 + 2 × 16 + 5 × 1 = 1,061
Read as powers of two: 1,024 + 32 + 4 + 1 = 1,061.
In historical numeral systems
Egyptian
1 lotus, 6 hobbles, 1 stroke
1 × 1,000 + 6 × 10 + 1 × 1 = 1,061. 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), 4 corner wedges + 1 vertical wedge (units place)
17 × 60 + 41 = 1061. 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
- Twin prime
Related numbers & connections
1061 is a year in the 11th century, in the 1060s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1061, the Norman conquest of Sicily began, ending two centuries of Muslim rule over the island (Sicily).
DocumentedHistoryGeography: SicilyPeriod: 1061
Common questions
Is 1061 a prime number?
Yes, 1061 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1061?
The factors of 1061 are 1, 1061.
What is 1061 in Roman numerals?
1061 in Roman numerals is MLXI.
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