1657
1657 is the year the first coffee house opened in London.
- Odd
- Prime
Where 1657 fits
Why 1657 is special
Coffee houses became venues for news, share dealing and insurance. Lloyd's of London and the London Stock Exchange both began in them.
Same number, different meanings
How 1657 is understood across different contexts — never implying one meaning because of another.
- Mathematics
Coffee houses became venues for news, share dealing and insurance. Lloyd's of London and the London Stock Exchange both began in them.
- History
In 1657, the Accademia del Cimento was founded in Florence, one of the earliest scientific societies (Italy).
- Finance & economics
London coffee houses from the 1650s became trading floors. Lloyd's began in Edward Lloyd's and the Stock Exchange in Jonathan's, which is why both are older than the buildings they occupy.
1657 is part of
Factors & digit properties
- Divisors (2)
- 1, 1657
- Prime factorisation
- 1657
- Digit sum
- 19
- Digital root
- 1
Representations
- Decimal
- 1657
- Scientific notation
- 1.657 × 10^3
Roman numerals
M D C L V I I
Binary
1 1 0 0 1 1 1 1 0 0 1
1 × 1,024 + 1 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 1,657
Octal
3 1 7 1
3 × 512 + 1 × 64 + 7 × 8 + 1 × 1 = 1,657
Hexadecimal
6 7 9
6 × 256 + 7 × 16 + 9 × 1 = 1,657
Read as powers of two: 1,024 + 512 + 64 + 32 + 16 + 8 + 1 = 1,657.
In historical numeral systems
Egyptian
1 lotus, 6 coils of rope, 5 hobbles, 7 strokes
1 × 1,000 + 6 × 100 + 5 × 10 + 7 × 1 = 1,657. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 7 vertical wedges (sixties place), 3 corner wedges + 7 vertical wedges (units place)
27 × 60 + 37 = 1657. 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
1657 is a year in the 17th century, in the 1650s.
London coffee houses from the 1650s became trading floors, and the South Sea Company of 1711 was floated in the financial culture they produced.
View 1711 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- developed from1711
why?
Strength 0.50, confidence "high".
History
In 1657, the Accademia del Cimento was founded in Florence, one of the earliest scientific societies (Italy).
DocumentedHistoryGeography: ItalyPeriod: 1657
Finance & economics
London coffee houses from the 1650s became trading floors. Lloyd's began in Edward Lloyd's and the Stock Exchange in Jonathan's, which is why both are older than the buildings they occupy.
DocumentedFinance & economicsGeography: London, EnglandPeriod: 1657
Common questions
Is 1657 a prime number?
Yes, 1657 is prime — it has exactly two positive divisors: 1 and itself.
What are the factors of 1657?
The factors of 1657 are 1, 1657.
What is 1657 in Roman numerals?
1657 in Roman numerals is MDCLVII.
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