Definition & Concepts Composite numbers can be defined as natural numbers with more than two factors. Examples: Prime numbers have numerous practical applications that touch various aspects of our ...

This can form an introduction to prime and composite numbers, and lead to discussion of ways to speed up identification of primes/composites, for example, using divisibility tests. The sketch at ...

For example, 2 x 2 x 2 x 2 = 16, with 1 fewer equalling 15 (a composite of 3 and 5 ... this approach is efficient at finding numbers that are prime, and the fact it can be tested with relative ...

This clip can form an introduction to prime and composite numbers, and lead to discussion of ways to speed up identification of primes/composites, for example, using divisibility tests.