2108
ISO 2108 defines the International Standard Book Number.
- Even
- Composite
Where 2108 fits
Why 2108 is special
The ISBN grew from ten digits to thirteen in 2007 because the ten-digit space was running out, and the check digit is what catches a mistyped order.
2108 is part of
Factors & digit properties
- Divisors (12)
- 1, 2, 4, 17, 31, 34, 62, 68, 124, 527, 1054, 2108
- Prime factorisation
- 2^2 × 17 × 31
- Digit sum
- 11
- Digital root
- 2
Representations
- Decimal
- 2108
- Binary
- 100000111100
- Octal
- 4074
- Hexadecimal
- 83c
- Roman numeral
- MMCVIII
- Scientific notation
- 2.108 × 10^3
Other mathematical patterns
- Deficient number
Related numbers & connections
ISO 2108 defines the ISBN, making it a standard number that governs another identifier system.
An ISBN identifies a book that is finished and an ISSN a publication that keeps arriving, which is why the two systems cannot be merged.
View 3297 →Technology & computing
ISO 2108 specifies the ISBN, administered nationally under an international agency. The move to thirteen digits aligned it with the GS1 barcode system used by retail generally.
DocumentedTechnology & computingGeography: International — ISO member bodiesPeriod: 1970–
Common questions
Is 2108 a prime number?
No, 2108 is not prime.
What are the factors of 2108?
The factors of 2108 are 1, 2, 4, 17, 31, 34, 62, 68, 124, 527, 1054, 2108.
What is 2108 in Roman numerals?
2108 in Roman numerals is MMCVIII.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 3 August 2026