Numberwise

1338

RFC 1338 introduced supernetting.

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Where 1338 fits

Where 1338 fits: Related numbersRelated numbers: 1918, 4632.Related numbers191846321338
1338 connects to 1 world: related numbers.

Why 1338 is special

It was the first step toward CIDR, motivated by a routing table that was growing faster than router memory could follow.

Factors & digit properties

Divisors (8)
1, 2, 3, 6, 223, 446, 669, 1338
Prime factorisation
2 × 3 × 223
Digit sum
15
Digital root
6

Representations

Decimal
1338
Binary
10100111010
Octal
2472
Hexadecimal
53a
Roman numeral
MCCCXXXVIII
Scientific notation
1.338 × 10^3

Other mathematical patterns

  • Abundant number

Related numbers & connections

Connection
Both were responses to IPv4 address pressure in the early 1990s, one by aggregation and one by reuse.

Both were responses to IPv4 address pressure in the early 1990s, one by aggregation and one by reuse.

View 1918 →

Other connections

  • is associated with1918
    why?

    Strength 0.50, confidence "high".

  • developed from4632
    why?

    Strength 0.50, confidence "high".

How is 1338 connected to another number? →

Technology & computing

  • RFC 1338 proposed supernetting to aggregate contiguous class C allocations, addressing routing table growth that threatened backbone router capacity in the early 1990s.

    DocumentedTechnology & computingGeography: International — IETFPeriod: 1992

Common questions

Is 1338 a prime number?

No, 1338 is not prime.

What are the factors of 1338?

The factors of 1338 are 1, 2, 3, 6, 223, 446, 669, 1338.

What is 1338 in Roman numerals?

1338 in Roman numerals is MCCCXXXVIII.

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