9797
ISO/IEC 9797 standardises message authentication codes.
- Odd
- Composite
Where 9797 fits
Why 9797 is special
Its CBC-MAC constructions are what payment terminals and smart cards use, where HMAC would require a hash function the hardware does not have.
Factors & digit properties
- Divisors (4)
- 1, 97, 101, 9797
- Prime factorisation
- 97 × 101
- Digit sum
- 32
- Digital root
- 5
Representations
- Decimal
- 9797
- Binary
- 10011001000101
- Octal
- 23105
- Hexadecimal
- 2645
- Scientific notation
- 9.797 × 10^3
Other mathematical patterns
- Deficient number
- Semiprime
Related numbers & connections
One builds message authentication from a block cipher and the other from a hash function, which suits different hardware.
View 2104 →Other connections
- contrasts with2104
why?
Strength 0.50, confidence "high".
Technology & computing
ISO/IEC 9797 specifies MAC algorithms including CBC-MAC variants built from block ciphers, used where a block cipher is available but a hash function is not.
DocumentedTechnology & computingGeography: International — ISO member bodiesPeriod: 1989–
Common questions
Is 9797 a prime number?
No, 9797 is not prime.
What are the factors of 9797?
The factors of 9797 are 1, 97, 101, 9797.
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