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The prime factors of 42 are 2, 3 and 7. You need at least two numbers to find an LCM.

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Q: What is the LCM and the prime factor of 42?

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Bad example. 42 is a factor of 126. Therefore 126 has to be the LCM. By the numbers... 2 x 3 x 7 = 42 2 x 3 x 3 x 7 = 126, the LCM

Factor or Prime factor

42 21,2 7,3,2

The LCM is: 840

The GCF is 2. The LCM is 42.

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3 2 x 3 x 7 = 42 Since 42 is a multiple of 3, it is automatically the LCM of the pair.

LCM(14, 42) = 42

The answer is 246 ------------ Since 13 is a prime number and is not a factor of 42, the LCM will be 42x13 (=246).

The factor tree finds the prime factorization. The prime factorization finds the LCM. Example: 30 and 42 Factor them. 30 15,2 5,3,2 42 21,2 7,3,2 2 x 3 x 5 = 30 2 x 3 x 7 = 42 Select the highest amount of each factor. 2 x 3 x 5 x 7 = 210, the LCM

The largest prime factor of 42 is 7

No. 42 is composite and therefore cannot be a prime factor.

To find the LCM of 26 and 42 you first need to break those numbers up into their prime factors. In this case, that would be: 26 = 2x13 42 = 2x3x7 The next step is to identify any common factors. In this case, both numbers have a 2 as a prime factor, so we can discard one of these. Take every other prime factor (2, 3, 7 and 13) and multiply them together to find the LCM: 2x3x7x13 = 546 Therefore the LCM of 26 and 42 is 546.

Bad example. 42 is a factor of 126. Therefore 126 has to be the LCM. By the numbers... 2 x 3 x 7 = 42 2 x 3 x 3 x 7 = 126, the LCM

The LCM of 6 and 42 is 42. Since 42 is a multiple of 6, it is automatically the LCM.You can also find the prime factors of each number to get the LCM. Use each factor the most it was used in either number. Multiply the factors.6=2x342=2x3x72x3x7=42 is the LCMIt is 42 because 6*7 = 42 and 1*42 = 42

Least Common Multiple (LCM) for 42 140 is 420.

the LCM of 42 and 126 using a prime factorization is 2 times 2 times 3

Factor or Prime factor

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