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**Related topic**

Investigate index notation and represent whole numbers as products of powers of prime numbers (ACMNA149)

- defining and comparing prime and composite numbers and explaining the difference between them
- applying knowledge of factors to strategies for expressing whole numbers as products of powers of prime factors, such as repeated division by prime factors or creating factor trees
- solving problems involving lowest common multiples and greatest common divisors (highest common factors) for pairs of whole numbers by comparing their prime factorisation

Indices, Prime numbers