Prime Factors
Maths: Year 5 & 6 National Curriculum, topic 1.3.4
Prime Factors
Prime factors are factors which are prime numbers.
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Definition recap
- A factor is a number which divides exactly into another number without any remainders.
- A prime number only has 2 factors.
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Prime factors
- The prime factors of a number are the factors of that number which are prime numbers.
- E.g. the factors of 15 are 1, 15, 3 and 5.
- The prime factors of 15 are 3 and 5 (both 3 and 5 are prime numbers).
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Prime factors of 24
- E.g. the factors of 24 are 1, 24, 2, 12, 3, 8, 4 and 6.
- The prime factors of 24 are 2 and 3 (both 2 and 3 are prime numbers).
- 1, 24, 12, 8, 4 and 6 are NOT prime factors because they are NOT prime.