The same way you factor other numbers. You look for any factor - I suggest starting with small factors, such as 2, 3, 5, 7, 11, ... In this case, it's immediately obvious that 2 is a factor, so you divide the number by 2 to get the other factor (in this case, you get 2 x 102). You continue looking for additional factors (in this case, look if the number 102 has smaller factors), and continue until you can find no more factors.
204 102,2 51,2,2 17,3,2,2
2 x 2 x 3 x 17 = 204
2 x 2 x 3 x 17 = 204
204 = 2 x 2 x 3 x 17
2 x 2 x 3 x 17
To find the Least Common Multiple (LCM) of 136, 102, and 204, we first need to find the prime factorization of each number. The prime factorization of 136 is 2^3 * 17, the prime factorization of 102 is 2 * 3 * 17, and the prime factorization of 204 is 2^2 * 3 * 17. To find the LCM, we take the highest power of each prime factor that appears in any of the numbers: 2^3 * 3 * 17 = 408. Therefore, the LCM of 136, 102, and 204 is 408.
2*2*3*17= 204
204 102,2 51,2,2 17,3,2,2
295 = 5 × 59
3 x 5 = 15
102
280 140,2 70,2,2 35,2,2,2 7,5,2,2,2