1259
1259 is a year in the 13th century. The Treaty of Paris had the English king renounce Normandy and hold Aquitaine as a French vassal (France and England).
- Odd
- Prime
Where 1259 fits
Why 1259 is special
1259 has a profile because of what happened in it rather than because of any property of the number: the Treaty of Paris had the English king renounce Normandy and hold Aquitaine as a French vassal (France and England).
1259 is part of
Factors & digit properties
- Divisors (2)
- 1, 1259
- Prime factorisation
- 1259
- Digit sum
- 17
- Digital root
- 8
Representations
- Decimal
- 1259
- Scientific notation
- 1.259 × 10^3
Roman numerals
M C C L I X
MCCLIX uses the subtractive pair IX: one before ten — ten minus one.
Binary
1 0 0 1 1 1 0 1 0 1 1
1 × 1,024 + 0 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 1 × 1 = 1,259
Octal
2 3 5 3
2 × 512 + 3 × 64 + 5 × 8 + 3 × 1 = 1,259
Hexadecimal
4 e b
4 × 256 + e × 16 + b × 1 = 1,259
Read as powers of two: 1,024 + 128 + 64 + 32 + 8 + 2 + 1 = 1,259.
In historical numeral systems
Egyptian
1 lotus, 2 coils of rope, 5 hobbles, 9 strokes
1 × 1,000 + 2 × 100 + 5 × 10 + 9 × 1 = 1,259. 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), 5 corner wedges + 9 vertical wedges (units place)
20 × 60 + 59 = 1259. 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
1259 is a year in the 13th century, in the 1250s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1259, the Treaty of Paris had the English king renounce Normandy and hold Aquitaine as a French vassal (France and England).
DocumentedHistoryGeography: France and EnglandPeriod: 1259
Common questions
Is 1259 a prime number?
Yes, 1259 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1259?
The factors of 1259 are 1, 1259.
What is 1259 in Roman numerals?
1259 in Roman numerals is MCCLIX. IX is subtractive: one before ten — ten minus one. Written additively it would be MCCLVIIII, 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: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026