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The only number with a single factor is ' 1 '.
Every other number has at least two factors: ' 1 ' and itself.
A number with only those two factors and no others is called a "prime" number.
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What numbers can go into 11 and 9?
The only common factor is one.
Natural numbers greater than one that have no other factor except one and themselves?
Those are called prime numbers.
What two numbers goes into -11 and 24?
The only common factor is one.
Do any numbers go into 280 and 297?
Yes. The only common factor of 280 and 297 is one.
Is the GCF of a pair of numbers ever equal to one of the numbers?
Yes, if one of the numbers is a factor of the other.
What is it called when numbers have a factor of one?
Prime numbers
Which numbers have only 1 as their factor?
The only number with one factor is 1.
What numbers have only one prime factor?
Prime numbers.
Why are composite numbers called composite numbers?
To distinguish them from prime numbers. Composite means "made up of various parts or elements." Prime numbers have one and only one factor pair. Composite numbers have a various number of factor pairs, but always more than one.
What numbers have only 1 distinct factor?
Prime numbers have one distinct prime factor.
Is it possible for two numbers to have only one common factor?
Yes. Not counting one as a factor, you could have numbers like 6 and 10 which only share one common factor, 2.
What kind of numbers have one factor?
The only number with just one factor is 1.
What are one of the two numbers in a factor pair multiplied together called?
factor
Why is the greatest common factor of two numbers sometimes 1?
All numbers have a common factor of 1. Sometimes that's the only common factor.
Why do prime numbers only have one array?
Because they only have one factor pair.
What is one of two or more numbers that is multiplied called?
a factor.
What is one of two or more numbers that are multipled called?
A factor
