Least Common Multiple (LCM) of 42 and 155

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To get the Least Common Multiple (LCM) of 42 and 155 we need to factor each value first and then we choose all the factors which appear in any column and multiply them:

42:   23 7 
155:     5 31
LCM:   235731

The Least Common Multiple (LCM) is:   2 x 3 x 5 x 7 x 31 = 6510

 

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