1.2.4

Prime Factors

Test yourself

Prime Factors

We can break a number down into its prime factors. This is the set of prime numbers which multiply together give the original number.

Illustrative background for What are the prime factors of 40?Illustrative background for What are the prime factors of 40? ?? "content

What are the prime factors of 40?

  • We can split 40 into two of its factors 2 and 20.
    • 2 is prime but 20 isn't.
Illustrative background for What are the prime factors of 40?Illustrative background for What are the prime factors of 40? ?? "content

What are the prime factors of 40?

  • We can split 20 into two of its factors 2 and 10.
    • 2 is prime but 10 isn't.
Illustrative background for What are the prime factors of 40?Illustrative background for What are the prime factors of 40? ?? "content

What are the prime factors of 40?

  • We can split 10 into two of its factors 2 and 5.
    • Both of these numbers are prime.
  • The prime factors of 40 are 2, 2, 2 and 5.

Jump to other topics

1Number

1.1Place Value

1.2Factors & Multiples

1.3Operations

1.4Fractions, Decimals & Percentages

1.5Growth & Decay

1.6Measurements & Units

1.7Accuracy

2Algebra

3Ratio, Proportion & Rates of Change

4Geometry & Measures

5Probability

6Statistics

Go student ad image

Unlock your full potential with GoStudent tutoring

  • Affordable 1:1 tutoring from the comfort of your home

  • Tutors are matched to your specific learning needs

  • 30+ school subjects covered

Book a free trial lesson