1,337
1,337 is 'leet' in leetspeak — the number that spells elite in substituted digits.
- Odd
- Composite
Where 1,337 fits
Why 1,337 is special
1337 is a piece of internet dialect that outlived its subculture. Early bulletin-board users replaced letters with lookalike digits partly to evade text filters, and 'elite' became 1337. It survives in port numbers, jokey version strings and the word 'leetspeak' itself, long after the filters it dodged stopped mattering.
Same number, different meanings
How 1,337 is understood across different contexts — never implying one meaning because of another.
- Mathematics
1337 is a piece of internet dialect that outlived its subculture. Early bulletin-board users replaced letters with lookalike digits partly to evade text filters, and 'elite' became 1337. It survives in port numbers, jokey version strings and the word 'leetspeak' itself, long after the filters it dodged stopped mattering.
- History
In 1337, the Hundred Years' War began over the French succession and the duchy of Aquitaine (France and England).
- Culture
Letter-for-digit substitution began partly as a way past bulletin-board word filters, and 'elite' rendered as 1337 became the label for the practice itself. The filters are long gone; the convention survives in port numbers, version strings and jokes, which is a fair description of most internet slang.
1,337 is part of
Factors & digit properties
- Divisors (4)
- 1, 7, 191, 1337
- Prime factorisation
- 7 × 191
- Digit sum
- 14
- Digital root
- 5
Representations
- Decimal
- 1337
- Scientific notation
- 1.337 × 10^3
Roman numerals
M C C C X X X V I I
Binary
1 0 1 0 0 1 1 1 0 0 1
1 × 1,024 + 0 × 512 + 1 × 256 + 0 × 128 + 0 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 0 × 4 + 0 × 2 + 1 × 1 = 1,337
Octal
2 4 7 1
2 × 512 + 4 × 64 + 7 × 8 + 1 × 1 = 1,337
Hexadecimal
5 3 9
5 × 256 + 3 × 16 + 9 × 1 = 1,337
Read as powers of two: 1,024 + 256 + 32 + 16 + 8 + 1 = 1,337.
In historical numeral systems
Egyptian
1 lotus, 3 coils of rope, 3 hobbles, 7 strokes
1 × 1,000 + 3 × 100 + 3 × 10 + 7 × 1 = 1,337. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
2 corner wedges + 2 vertical wedges (sixties place), 1 corner wedge + 7 vertical wedges (units place)
22 × 60 + 17 = 1337. 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
- Happy number
- Semiprime
Related numbers & connections
1337 is a year in the 14th century, in the 1330s.
Both are numbers used deliberately as placeholders and in-jokes across software.
View 42 →History
In 1337, the Hundred Years' War began over the French succession and the duchy of Aquitaine (France and England).
DocumentedHistoryGeography: France and EnglandPeriod: 1337Leetspeak developed on bulletin board systems in the 1980s, where substituting digits for letters helped messages evade keyword filtering and marked membership of a community. The style outlived both the filters and the boards.
DocumentedHistoryGeography: Originating in United States online communitiesPeriod: 1980s–
Culture
Letter-for-digit substitution began partly as a way past bulletin-board word filters, and 'elite' rendered as 1337 became the label for the practice itself. The filters are long gone; the convention survives in port numbers, version strings and jokes, which is a fair description of most internet slang.
DocumentedCultureCulture: early internet communities
Common questions
Is 1,337 a prime number?
No, 1,337 is not prime.
What are the factors of 1,337?
The factors of 1,337 are 1, 7, 191, 1337.
What is 1,337 in Roman numerals?
1,337 in Roman numerals is MCCCXXXVII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 3 reviewer-confirmed records, sourced and reviewed before publication.
Last reviewed: 15 July 2026