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Which number is the lowest common factor of all numbers?
1
What is the least common factor of 15 and 60?
The LCF of any pair of numbers is always 1, since it is the lowest number that can be a factor and is a trivial factor of all numbers. The least common factor of any set of numbers is 1.
What are two examples of a type of number that has an odd number factor?
There are square numbers (numbers which are a square of an integer), such as 4. It's factors, listed are 1, 2, and 4. All square numbers have an odd number of factors. Then there's 1, which has only 1 factor: 1. All other numbers have an even number of factors. Prime numbers will have only 2 factors (2 is even).
What is the greatest common factor of 2 or more prime numbers?
As the numbers are all prime, the only factors each of them has are 1 and the number itself. Therefore the greatest, and only, common factor of two of more prime numbers is 1.
Is 226 a prime number?
226 is a composite number, not a prime number. All even numbers except for the number 2 are composite numbers because 2 is a factor of all of them. To be a prime number, the only factors can be 1 and itself.
