Maths, Physics Revision Physicss Maths Physics Physics A Level Physics Home Maths Maths Revision hut Factors Numbers which divide exactly into a higher number  are said to be factors of the higher number. For example 2 x 3 = 6.   2 and 3 are factors of 6 Highest common factor If you work out the factors of two different  numbers the highest common  factor (HCF) is the highest number  that appears  In both lists Prime factor presentation Prime Factors The prime factors of a number are the  prime numbers which when multiplied together  produce the number For example the prime factors of 12 are 2, 2, and 3 (check 2 x 2 x 3 =12) Try this Press start