Question

Using prime factorisation, find the HCF and LCM of 23, 31. In case verify that HCF × LCM = product of given numbers.

Answer 1

Prime factorisation:

23 = 23

31 = 31

HCF = product of smallest power of each common prime factor in the numbers = 1

LCM = product of greatest power of each prime factor involved in the numbers = 23 × 31 = 713