Since 1, known as the "multiplicative identity", cannot be counted as a factor, there are many pairs of numbers that do not have common factors, such as 2 and 3, 2 and 5, and 3 and 5. There are many pairs of composite (not prime) numbers without common factors, such as 4 and 9.
Also, since prime numbers do not have factors, any pair of primes cannot have a common factor, though a pair in which one number is prime may, e.g. 5 and 10.
Chat with our AI personalities
The least common factor of any set of numbers is 1.
The least (meaning lowest) common factor of any set of whole numbers is always 1. The greatest common factor of any set of whole numbers will depend on the factors of the individual whole numbers in the set.
The pair of numbers that have a greatest common factor of 2 are any two even numbers. This is because the greatest common factor of two numbers is the largest number that divides both numbers evenly. Since 2 is the only even prime number, any two even numbers will have 2 as a common factor.
The least common factor of any set of numbers is 1.
The least common factor of any set of numbers is 1.
The least common factor of any set of numbers is 1.
The least common factor of any set of numbers is 1.
The lowest common factor of any set of numbers is 1.
The least common factor of any set of numbers is 1.
The least common factor of any set of numbers is 1.
The least common factor of any set of numbers is 1.
The least common factor of any set of numbers is 1.
The least common factor of any set of numbers is 1.
The least common factor of any set of numbers is 1.
The least common factor of any set of numbers is 1.
The least common factor of any set of numbers is 1.
The least common factor of any two numbers, including these, is ' 1 '.The greatest common factor of these two is 3 .