What is the least common factor of 77 and 55?

To answer the question, "What is the least common factor of 77 and 55?", we will start by defining and listing factors of 77 and 55.

Factors of 77 are all the integers that when multiplied by another integer equal 77. Likewise, factors of 55 are all the integers that when multiplied by another integer equal 55.

The factors of 77 are 1, 7, 11, and 77.

The factors 55 are 1, 5, 11, and 55.

When you ask, "What is the least common factor of 77 and 55?", least is the key word here. Least means smallest. Thus, the smallest or least common factor that 77 and 55 have in common is 1.

Note that all integers, such as 77 and 55, 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 77 and 55, you may also be interested in knowing the greatest common factor of 77 and 55. The greatest factor 77 and 55 have in common, per the list above, is 11.

When you asked for the least common factor of 77 and 55, did you mean least common multiple? If so, the least common multiple of 77 and 55 is 385.

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