GCSE Maths from Scratch 4.05 Prime Factor Decomposition

[riad]

the best teacher ever, thanks for the great job

[Mathspaperksks]

Excellent video sir well explained good job.

[nidgeontour]

I was looking at 72 and breaking it down to it's prime factors. I got 2x2x2x3x3 How would you write that in short form or is it standard form? Is there a sq root sign involved? Thanks