1515
1515 is the year Dürer made his woodcut of a rhinoceros he had never seen.
- Odd
- Composite
Where 1515 fits
Why 1515 is special
He worked from a written description and a sketch. The result is anatomically wrong in specific ways and was reproduced in natural history books for over two centuries as accurate.
Same number, different meanings
How 1515 is understood across different contexts — never implying one meaning because of another.
- Mathematics
He worked from a written description and a sketch. The result is anatomically wrong in specific ways and was reproduced in natural history books for over two centuries as accurate.
- History
In 1515, Francis I won at Marignano, where Swiss pikemen were beaten by artillery (Italy).
- Culture
Dürer's rhinoceros was drawn from a second-hand description and includes armour plating and a spurious horn. It appeared in scientific texts as the standard depiction until the late 1700s.
1515 is part of
Factors & digit properties
- Divisors (8)
- 1, 3, 5, 15, 101, 303, 505, 1515
- Prime factorisation
- 3 × 5 × 101
- Digit sum
- 12
- Digital root
- 3
Representations
- Decimal
- 1515
- Scientific notation
- 1.515 × 10^3
Roman numerals
M D X V
Binary
1 0 1 1 1 1 0 1 0 1 1
1 × 1,024 + 0 × 512 + 1 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 1 × 1 = 1,515
Octal
2 7 5 3
2 × 512 + 7 × 64 + 5 × 8 + 3 × 1 = 1,515
Hexadecimal
5 e b
5 × 256 + e × 16 + b × 1 = 1,515
Read as powers of two: 1,024 + 256 + 128 + 64 + 32 + 8 + 2 + 1 = 1,515.
In historical numeral systems
Egyptian
1 lotus, 5 coils of rope, 1 hobble, 5 strokes
1 × 1,000 + 5 × 100 + 1 × 10 + 5 × 1 = 1,515. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 5 vertical wedges (sixties place), 1 corner wedge + 5 vertical wedges (units place)
25 × 60 + 15 = 1515. 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
1515 is a year in the 16th century, in the 1510s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1515, Francis I won at Marignano, where Swiss pikemen were beaten by artillery (Italy).
DocumentedHistoryGeography: ItalyPeriod: 1515
Culture
Dürer's rhinoceros was drawn from a second-hand description and includes armour plating and a spurious horn. It appeared in scientific texts as the standard depiction until the late 1700s.
DocumentedCultureGeography: GermanyPeriod: 1515
Common questions
Is 1515 a prime number?
No, 1515 is not prime.
What are the factors of 1515?
The factors of 1515 are 1, 3, 5, 15, 101, 303, 505, 1515.
What is 1515 in Roman numerals?
1515 in Roman numerals is MDXV.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 2 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026