1 is a factor of every number.
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Nope.... 1 is a factor of every prime number !
because 1 x (every number) = (every number) and that makes 1 a factor of (every number)
1 times a number equals itself. The number is the first on the list of multiples.
The greatest factor of any number is the number itself. There is no integer that is the greatest factor of every number. One is a factor of every number. One is the GCF of co-prime numbers.
No because factors are whole numbers but every whole number except zero has 1 as a factor.