What is the least common factor of 81 and 3?

To answer the question, "What is the least common factor of 81 and 3?", we will start by defining and listing factors of 81 and 3.

Factors of 81 are all the integers that when multiplied by another integer equal 81. Likewise, factors of 3 are all the integers that when multiplied by another integer equal 3.

The factors of 81 are 1, 3, 9, 27, and 81.

The factors 3 are 1 and 3.

When you ask, "What is the least common factor of 81 and 3?", least is the key word here. Least means smallest. Thus, the smallest or least common factor that 81 and 3 have in common is 1.

Note that all integers, such as 81 and 3, have 1 as one of its factors. Thus, the answer to the least common factor of any two integers greater than 0 will always be 1.

Now that you know the least common factor of 81 and 3, you may also be interested in knowing the greatest common factor of 81 and 3. The greatest factor 81 and 3 have in common, per the list above, is 3.

When you asked for the least common factor of 81 and 3, did you mean least common multiple? If so, the least common multiple of 81 and 3 is 81.

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