1631
1631 is the year of the 'Wicked Bible'.
- Odd
- Composite
Where 1631 fits
Why 1631 is special
A printing omitted the word 'not' from the seventh commandment, instructing readers to commit adultery. The printers were fined and most copies destroyed; about twenty survive.
1631 connects to:
- historical years — appears in
- 1611 — contrasts with
Same number, different meanings
How 1631 is understood across different contexts — never implying one meaning because of another.
- Mathematics
A printing omitted the word 'not' from the seventh commandment, instructing readers to commit adultery. The printers were fined and most copies destroyed; about twenty survive.
- History
In 1631, Vesuvius erupted, the most destructive eruption since antiquity and the one that prompted systematic monitoring (Italy).
- Media & popular culture
A 1631 King James printing dropped 'not' from 'Thou shalt not commit adultery'. The printers lost their licence and were fined heavily, and surviving copies are now extremely valuable.
1631 is part of
Factors & digit properties
- Divisors (4)
- 1, 7, 233, 1631
- Prime factorisation
- 7 × 233
- Digit sum
- 11
- Digital root
- 2
Representations
- Decimal
- 1631
- Scientific notation
- 1.631 × 10^3
Roman numerals
M D C X X X I
Binary
1 1 0 0 1 0 1 1 1 1 1
1 × 1,024 + 1 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 0 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 1 × 2 + 1 × 1 = 1,631
Octal
3 1 3 7
3 × 512 + 1 × 64 + 3 × 8 + 7 × 1 = 1,631
Hexadecimal
6 5 f
6 × 256 + 5 × 16 + f × 1 = 1,631
Read as powers of two: 1,024 + 512 + 64 + 16 + 8 + 4 + 2 + 1 = 1,631.
In historical numeral systems
Egyptian
1 lotus, 6 coils of rope, 3 hobbles, 1 stroke
1 × 1,000 + 6 × 100 + 3 × 10 + 1 × 1 = 1,631. 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), 1 corner wedge + 1 vertical wedge (units place)
27 × 60 + 11 = 1631. 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
1631 is a year in the 17th century, in the 1630s.
The King James Bible of 1611 and the 1631 printing that omitted 'not' from the seventh commandment. One missing word cost the printers their licence.
View 1611 →Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
Other connections
- contrasts with1611
why?
Strength 0.50, confidence "high".
History
In 1631, Vesuvius erupted, the most destructive eruption since antiquity and the one that prompted systematic monitoring (Italy).
DocumentedHistoryGeography: ItalyPeriod: 1631
Media & popular culture
A 1631 King James printing dropped 'not' from 'Thou shalt not commit adultery'. The printers lost their licence and were fined heavily, and surviving copies are now extremely valuable.
DocumentedMedia & popular cultureGeography: EnglandPeriod: 1631
Common questions
Is 1631 a prime number?
No, 1631 is not prime.
What are the factors of 1631?
The factors of 1631 are 1, 7, 233, 1631.
What is 1631 in Roman numerals?
1631 in Roman numerals is MDCXXXI.
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