You wouldn't normally list it in a factor tree, because it's not technically a Prime number, and besides if you did, you could keep on adding x1 x1 x1 x1 forever and not change the value.
That being said, if you wanted to show the factorization of a prime number, you'd most likely write it as (for example) 709 x 1, just to show that nothing else divides evenly into 709.
Yes, just as 1 is considered a factor of everything, a number is considered a factor of itself.
Yes.
The least common factor of any set of integers is 1.
It is a conversion factor but, it could be considered a rate [of conversion].
If the number 1 is considered a factor, then these are the prime numbers. Their only factors are 1 and themselves.
Yes, just as 1 is considered a factor of everything, a number is considered a factor of itself.
Yes.
If 1 is considered a factor, the only common factor of 21 & 19 is 1, because 19 is a prime number. I'm not sure whether 1 is considered a factor since it does not reduce the original number and it's not a prime number.
The least common factor of any set of integers is 1.
A factor is any number which the original number can divide into evenly. A common factor is a number which is a factor of both numbers being considered. In this case, we have 1. The only nunmber 1 can divide evenly into is 1, and thus this is the only common factor between it and 7. Therefore, the GCF of 1 and 7 is 1.
The least common factor of any set of integers is 1.
It is a conversion factor but, it could be considered a rate [of conversion].
Every whole number has at least one prime factor.With the possible exception of ' 1 ', whose only factor is ' 1 ' andisn't considered a prime number.
1 is special. In all classes I've taken, it's been considered not a prime number.As for a prime factor, you wouldn't include it in factoring.
If the number 1 is considered a factor, then these are the prime numbers. Their only factors are 1 and themselves.
It has only two which are 2 and 17 because 1 is not considered as a prime factor
The vertical curves at crest is an important factor to be considered in design of summit curves.