Question

Find the HCF of the following numbers by prime factorisation:- 1) 513,783​

Answer 1

Solution:

(for factorisation, refer to attachment)

so, 513 = 1×3×3×3×19

& 783 = 1×3×3×3×29

So, the common factor of 513 & 783 = 1,3,3 and 3

So highest common factor = 3×3×3 =27