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Calculate the Least Common Multiple or LCM of 142 and 242

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The instructions to find the LCM of 142 and 242 are the next:

1. Decompose all numbers into prime factors

1422
7171
1
2422
12111
1111
1

2. Write all numbers as the product of its prime factors

Prime factors of 142=2 . 71
Prime factors of 242=2 . 112

3. Choose the common and uncommon prime factors with the greatest exponent

Common prime factors: 2

Common prime factors with the greatest exponent: 21

Uncommon prime factors: 71 , 11

Uncommon prime factors with the greatest exponent: 711, 112

4. Calculate the Least Common Multiple or LCM

Remember, to find the LCM of several numbers you must multiply the common and uncommon prime factors with the greatest exponent of those numbers.

LCM = 21. 711. 112 = 17182


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