What is the least common factor of 77 and 19?

To answer the question, "What is the least common factor of 77 and 19?", we will start by defining and listing factors of 77 and 19.

Factors of 77 are all the integers that when multiplied by another integer equal 77. Likewise, factors of 19 are all the integers that when multiplied by another integer equal 19.

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

The factors 19 are 1 and 19.

When you ask, "What is the least common factor of 77 and 19?", least is the key word here. Least means smallest. Thus, the smallest or least common factor that 77 and 19 have in common is 1.

Note that all integers, such as 77 and 19, 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 19, you may also be interested in knowing the greatest common factor of 77 and 19. The greatest factor 77 and 19 have in common, per the list above, is 1.

When you asked for the least common factor of 77 and 19, did you mean least common multiple? If so, the least common multiple of 77 and 19 is 1463.

Least Common Factor Calculator
Need the least common factor for another set of numbers? Please submit your numbers here:

What is the least common factor of 77 and 20?
Go here for the next least common factor problem on our list.