1315
1315 is the year the Great Famine began in Europe.
- Odd
- Composite
Where 1315 fits
Why 1315 is special
Years of rain destroyed harvests across northern Europe and killed perhaps a tenth of the population. It arrived a generation before the Black Death, into a population already weakened.
1315 is part of
Factors & digit properties
- Divisors (4)
- 1, 5, 263, 1315
- Prime factorisation
- 5 × 263
- Digit sum
- 10
- Digital root
- 1
Representations
- Decimal
- 1315
- Scientific notation
- 1.315 × 10^3
Roman numerals
M C C C X V
Binary
1 0 1 0 0 1 0 0 0 1 1
1 × 1,024 + 0 × 512 + 1 × 256 + 0 × 128 + 0 × 64 + 1 × 32 + 0 × 16 + 0 × 8 + 0 × 4 + 1 × 2 + 1 × 1 = 1,315
Octal
2 4 4 3
2 × 512 + 4 × 64 + 4 × 8 + 3 × 1 = 1,315
Hexadecimal
5 2 3
5 × 256 + 2 × 16 + 3 × 1 = 1,315
Read as powers of two: 1,024 + 256 + 32 + 2 + 1 = 1,315.
In historical numeral systems
Egyptian
1 lotus, 3 coils of rope, 1 hobble, 5 strokes
1 × 1,000 + 3 × 100 + 1 × 10 + 5 × 1 = 1,315. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 1 vertical wedge (sixties place), 5 corner wedges + 5 vertical wedges (units place)
21 × 60 + 55 = 1315. 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
- Semiprime
Related numbers & connections
1315 is a year in the 14th century, in the 1310s.
The Great Famine from 1315 killed perhaps a tenth of northern Europe, and the Black Death arrived thirty-three years later into a population that had not recovered.
View 1348 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- developed from1348
why?
Strength 0.50, confidence "high".
History
In 1315, the Great Famine began after successive harvest failures, killing perhaps a tenth of the population over three years (Northern Europe).
DocumentedHistoryGeography: Northern EuropePeriod: 1315Persistent rain from 1315 caused successive harvest failures and killed roughly a tenth of northern Europe. The Black Death arrived thirty years later into a population that had not fully recovered, which compounded both.
DocumentedHistoryGeography: Northern EuropePeriod: 1315–1317
Common questions
Is 1315 a prime number?
No, 1315 is not prime.
What are the factors of 1315?
The factors of 1315 are 1, 5, 263, 1315.
What is 1315 in Roman numerals?
1315 in Roman numerals is MCCCXV.
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