How do you write 42 as a product of its ' factors?

Step 1
The lowest ' number is 2. So we begin by dividing 42 by 2.
${\displaystyle \Rightarrow 42÷2=21}$
Now 21 cannot be divided by 2 so we now divide by the next highest ' number which is 3.
${\displaystyle \Rightarrow 21÷3=7}$
Step 2
Now 7 is a ' number
${\displaystyle \Rightarrow 7÷7=1}$ when we reach 1 we stop there.
Prime factors of 42 are 2, 3 and 7 and as a product of ' factors, means expressing them in multiplication form.
${\displaystyle \Rightarrow 42=2\times 3\times 7\leftarrow \text{product of ' factors}}$