speed
you can just use your brain to find the LCM faster, sometimes.
What is the prime factorization of 125 using continuous division method
What is prime factorization of 81 using continuous division
31 is already prime; no method required.
31 is already prime; no method required.
The prime factorization of 87 is 3 x 29.
The prime factorization of 27 is 3 x 3 x 3.
139 is already prime; no factorization required.
ewan
145 5,29
it is fast and easy
It is: 7*7 = 49
2, 5 and 7