Question

What is the LCM of two numbers that have no common factors greater than 1?

Answer 1

This question was already answered before. I'm going to post someone else's answer with credit given of course:

"The answer is their product. The least common multiple (LCM) is the smallest number which is a multiple of two numbers. If two numbers have no common factors greater than 1, then their LCM will be their product. For example, take numbers 7 and 9. They have none common factor greater than 1. So, LCM will be 7 * 9 = 63." - @W0lf93

Not sure if this answers your question, but hope this helped...

Answer 2

the numbers are m and n where m and n have no common factors

to find the LCM, factor them and group the common factors

since m and n have no common factors
m=1*m
n=1*n
LCM=1*m*n=mn

the LCM of 2 numbers with no common factors greater than 1 is the product of the 2 numbers