Numberwise

791

RFC 791 defines the Internet Protocol.

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Where 791 fits

Where 791 fits: Mathematics, Technology, Related numbersMathematics: Semiprime. Technology: Numbers assigned as identifiers. Related numbers: 793, 2474, 4291.MathematicsSemiprimeTechnologyNumbers assigned as identif…Related numbers79324744291791
791 connects to 3 worlds: mathematics, technology, related numbers.

Why 791 is special

It is the specification that makes the internet a single network rather than many. Its 32-bit address field is the constraint everything since has worked around, and the document itself is under fifty pages.

791 is part of

Identifier numbersNumbers around us

Factors & digit properties

Divisors (4)
1, 7, 113, 791
Prime factorisation
7 × 113
Digit sum
17
Digital root
8

Representations

Decimal
791
Binary
1100010111
Octal
1427
Hexadecimal
317
Roman numeral
DCCXCI
Scientific notation
7.910 × 10^2

Other mathematical patterns

Related numbers & connections

Documented appearance
RFC 791 labels the IPv4 specification, the document whose 32-bit address field set the ceiling everything since has worked around.

RFC 791 labels the IPv4 specification, the document whose 32-bit address field set the ceiling everything since has worked around.

Connection
RFC 791 defines how packets are addressed and RFC 793 how a reliable ordered stream is built on top of them. Together they are the internet's foundation.

RFC 791 defines how packets are addressed and RFC 793 how a reliable ordered stream is built on top of them. Together they are the internet's foundation.

View 793 →

Numbers Around Us

  • appears inNumbers assigned as identifiers
    why?

    Strength 0.50, confidence "high".

Other connections

  • developed from793
    why?

    Strength 0.50, confidence "high".

  • developed from2474
    why?

    Strength 0.50, confidence "high".

  • developed from4291
    why?

    Strength 0.50, confidence "high".

How is 791 connected to another number? →

Technology & computing

  • RFC 791 defines IPv4 in under fifty pages, including the 32-bit address field that limited the internet to about 4.3 billion addresses. Almost every later networking development addresses a consequence of this document.

    DocumentedTechnology & computingPeriod: 1981

Common questions

Is 791 a prime number?

No, 791 is not prime.

What are the factors of 791?

The factors of 791 are 1, 7, 113, 791.

What is 791 in Roman numerals?

791 in Roman numerals is DCCXCI.

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