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Q: Are there any pairs of prime numbers that when multiplied do not make their least common multiple?

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When two numbers are relatively prime, then one number has to be multiplied by another to get their least common multiple.

They aren't multiplied, but 18 and 36 have an LCM of 36.

The least common multiple of two numbers is the product of those two numbers divided by their greatest common factor. It the two numbers are coprime (or relatively prime), their greatest common factor is 1. Therefore, their least common multiple is a x b ÷ GCF (of a and b) = a x b ÷ 1 = a x b. The least common multiple of two coprime numbers is the numbers multiplied together.

Multiplying two numbers together will create a common multiple. It is sometimes, but not always, the LCM as well.

The definition of least common multiple is the lowest number that is the product of all of the numbers in a set when multiplied by an integer. In this case, the least common multiple is 28; this is because 7*4= 28, 4*7=28, and 14*2=28. There is not a lower number into which these three numbers can all be evenly multiplied into.

All numbers with a least common multiple, have that multiple as a factor.

The least common multiple is one of the numbers when one of the numbers is a multiple of the other.

The LCM (least common multiple) is 21. So the LCM in this case is the same as the two numbers multiplied.

The least common multiple of the numbers 2,357 and 11 is 25,927.The least common multiple of the numbers 23, 57 and 11 is 14,421.

The least common multiple of the numbers 12 and 34 is 204.

The least common multiple of the numbers 210 and 90 is 630.

to find the least common multiple of two numbers you must list the factors then you can find out their least common multiple of the two numbers

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