1771
1771 is the year the Encyclopaedia Britannica was completed.
- Odd
- Composite
Where 1771 fits
Why 1771 is special
It ran to three volumes and was compiled in Edinburgh. It remained in print for 244 years, ending its print edition in 2012 after the reference market moved online.
Same number, different meanings
How 1771 is understood across different contexts — never implying one meaning because of another.
- Mathematics
It ran to three volumes and was compiled in Edinburgh. It remained in print for 244 years, ending its print edition in 2012 after the reference market moved online.
- History
In 1771, the first edition of the Encyclopaedia Britannica was completed in Edinburgh (Scotland).
- Culture
Britannica's first edition was finished in 1771 and the print edition ended in 2012. Few products of any kind have a continuous production run of that length, and what displaced it took about a decade.
Factors & digit properties
- Divisors (8)
- 1, 7, 11, 23, 77, 161, 253, 1771
- Prime factorisation
- 7 × 11 × 23
- Digit sum
- 16
- Digital root
- 7
Representations
- Decimal
- 1771
- Scientific notation
- 1.771 × 10^3
Roman numerals
M D C C L X X I
Binary
1 1 0 1 1 1 0 1 0 1 1
1 × 1,024 + 1 × 512 + 0 × 256 + 1 × 128 + 1 × 64 + 1 × 32 + 0 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 1 × 1 = 1,771
Octal
3 3 5 3
3 × 512 + 3 × 64 + 5 × 8 + 3 × 1 = 1,771
Hexadecimal
6 e b
6 × 256 + e × 16 + b × 1 = 1,771
Read as powers of two: 1,024 + 512 + 128 + 64 + 32 + 8 + 2 + 1 = 1,771.
In historical numeral systems
Egyptian
1 lotus, 7 coils of rope, 7 hobbles, 1 stroke
1 × 1,000 + 7 × 100 + 7 × 10 + 1 × 1 = 1,771. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 9 vertical wedges (sixties place), 3 corner wedges + 1 vertical wedge (units place)
29 × 60 + 31 = 1771. 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
- Palindromic number
- Deficient number
- Happy number
- Lucky number (mathematical sieve)
Related numbers & connections
1771 is a year in the 18th century, in the 1770s.
The Encyclopédie began in 1751 and Britannica was completed in 1771. One was suppressed twice by church and state; the other ran in print for 244 years.
View 1751 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- developed from1751
why?
Strength 0.50, confidence "high".
History
In 1771, the first edition of the Encyclopaedia Britannica was completed in Edinburgh (Scotland).
DocumentedHistoryGeography: ScotlandPeriod: 1771
Culture
Britannica's first edition was finished in 1771 and the print edition ended in 2012. Few products of any kind have a continuous production run of that length, and what displaced it took about a decade.
DocumentedCultureGeography: ScotlandPeriod: 1771
Common questions
Is 1771 a prime number?
No, 1771 is not prime.
What are the factors of 1771?
The factors of 1771 are 1, 7, 11, 23, 77, 161, 253, 1771.
What is 1771 in Roman numerals?
1771 in Roman numerals is MDCCLXXI.
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