HCF of 44 and 66 by Prime Factorization method

Prime Factorization of $44=2\times 2\times 11=2^2\times 11$

                                     $66=2\times 3\times 11=2\times 3\times 11$

$\therefore$Common factor of 44 and 66 is $=2\times 11=22$

HCF of 44 and 66 is 22