Yes.
Short answer: There are none. There is neither a greatest common factor nor common factors of a single number, such as ??, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. Examples: The common factors of 1 and 3 are only 1; the greatest common factor is 1. The common factors of 1 and 111 are only 1; the greatest common factor is 1. Note: Since the only factor of 1 is 1, when finding the greatest common factor of 1 and another number, the only possible common factor and greatest common factor is 1.
The common factor is: 1
The only common factor is 1.
The least common factor is always one (1), regardless of what the greatest common factor is.
The greatest common factor of 1-x3 is 1, dummy.
The common factor of 1 and 3 is 1.The common factor of 11 and 3 is 1.
The least common factor is 1 but the highest common factor is 4
Short answer: There are none. There is neither a greatest common factor nor common factors of a single number, such as ??, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. Examples: The common factors of 1 and 3 are only 1; the greatest common factor is 1. The common factors of 1 and 111 are only 1; the greatest common factor is 1. Note: Since the only factor of 1 is 1, when finding the greatest common factor of 1 and another number, the only possible common factor and greatest common factor is 1.
The only common factor is 1.
2 is not a factor of 1, common or otherwise.
The least common factor is: 1(The least common factor of any set of integers is 1.)The least common factor of any set of positive integers is 1.
The least common factor of 4 and 9 is is: 1
The least common factor of any set of numbers is 1.
The factors of 17 are 1 and 17. The factors of 19 are 1 and 19. The only common factor is 1. Therefore, the least (lowest) common factor is 1 and the greatest (highest) common factor is 1.
The least common factor of any set of numbers is 1.
The greatest common factor of 18 and 55 is 1.
The least common factor is: 1