Common Prime number is 2 only.
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The LCM is 56.
They are: 7 and 8
1 * 56 = 56 2 * 28 = 56 4 * 14 = 56 7 * 8 = 56 8 * 7 = 56 14 * 4 = 56 28 * 2 = 56 56 * 1 = 56
The factors of 56 are: 1 2 4 7 8 14 28 56 The prime factors are: 2 x 2 x 2 x 7 http://www.classbrain.com/artteach/publish/article_48.shtml?num=56&worksp=
Prime factors of 56 First, what two numbers multiplied give you 56? 7 x 8 Is either of these a prime number?? Yes, 7 is prime. What about 8? What two numbers multiplied together give you 8? 2 x 4 Is either of these a prime number?? Yes, 2 is prime. What about 4? What two numbers multiplied together give you 4? 2 x 2 Is either of these a prime number?? Yes, both are prime. Combining our individual results, the prime factorisation of 56 is 7 x 2 x 2 x 2