1626
1626 is the year Manhattan was purchased from local inhabitants.
- Even
- Composite
Where 1626 fits
Why 1626 is special
A letter records goods worth 60 guilders. The Lenape almost certainly understood the transaction as shared use rather than permanent alienation, since exclusive land ownership was not a concept they held.
Same number, different meanings
How 1626 is understood across different contexts — never implying one meaning because of another.
- Mathematics
A letter records goods worth 60 guilders. The Lenape almost certainly understood the transaction as shared use rather than permanent alienation, since exclusive land ownership was not a concept they held.
- History
In 1626, St Peter's Basilica was consecrated in Rome after more than a century of building (Italy).
- Law & regulation
The 1626 Manhattan transaction is documented from one side only. Dutch law treated it as conveying title; Lenape practice had no equivalent of permanent exclusive ownership, so the parties are unlikely to have agreed on what occurred.
1626 is part of
Factors & digit properties
- Divisors (8)
- 1, 2, 3, 6, 271, 542, 813, 1626
- Prime factorisation
- 2 × 3 × 271
- Digit sum
- 15
- Digital root
- 6
Representations
- Decimal
- 1626
- Scientific notation
- 1.626 × 10^3
Roman numerals
M D C X X V I
Binary
1 1 0 0 1 0 1 1 0 1 0
1 × 1,024 + 1 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 1 × 2 + 0 × 1 = 1,626
Octal
3 1 3 2
3 × 512 + 1 × 64 + 3 × 8 + 2 × 1 = 1,626
Hexadecimal
6 5 a
6 × 256 + 5 × 16 + a × 1 = 1,626
Read as powers of two: 1,024 + 512 + 64 + 16 + 8 + 2 = 1,626.
In historical numeral systems
Egyptian
1 lotus, 6 coils of rope, 2 hobbles, 6 strokes
1 × 1,000 + 6 × 100 + 2 × 10 + 6 × 1 = 1,626. 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), 6 vertical wedges (units place)
27 × 60 + 6 = 1626. 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
- Abundant number
Related numbers & connections
1626 is a year in the 17th century, in the 1620s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1626, St Peter's Basilica was consecrated in Rome after more than a century of building (Italy).
DocumentedHistoryGeography: ItalyPeriod: 1626
Law & regulation
The 1626 Manhattan transaction is documented from one side only. Dutch law treated it as conveying title; Lenape practice had no equivalent of permanent exclusive ownership, so the parties are unlikely to have agreed on what occurred.
DocumentedLaw & regulationGeography: ManhattanPeriod: 1626
Common questions
Is 1626 a prime number?
No, 1626 is not prime.
What are the factors of 1626?
The factors of 1626 are 1, 2, 3, 6, 271, 542, 813, 1626.
What is 1626 in Roman numerals?
1626 in Roman numerals is MDCXXVI.
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