Math 2.0

Number theory Definition

Composite number

Builds on Prime number

Definition

A composite number is a natural number nn such that n>1n > 1 and nn is not a prime number.

Remarks

Equivalently, nn is composite when n=abn = a b for some natural numbers aa and bb with 1<a<n1 < a < n and 1<b<n1 < b < n. The first composite numbers are 4,6,8,9,10,124, 6, 8, 9, 10, 12. The number 11 is neither prime nor composite.

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  1. Divisibility definition
  2. Prime number definition
  3. Composite number definition

Where this leads

3 pages build on this one.

Further reading

  1. Web https://en.wikipedia.org/wiki/Composite_number, lead section
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