find the LCM of 188 and 286 by prime factorization method

Prime factorisation of 188 = $2\times 2\times 47$
And prime factorisation of 286 = $2\times 11\times 13$
So LCM of 188 and 286 = $2\times 2\times 11\times 47\times 13$ = 26884
Therefore the LCM of 188 and 286 is 26884.