Least Common Multiple (LCM) of 642 and 42

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To get the Least Common Multiple (LCM) of 642 and 42 we need to factor each value first and then we choose all the factors which appear in any column and multiply them:

642:   23 107
42:   237 
LCM:   237107

The Least Common Multiple (LCM) is:   2 x 3 x 7 x 107 = 4494

 

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